2012年2月8日水曜日

Can You Daisy Chain Routers Supporting Air Cards

can you daisy chain routers supporting air cards

bestshopping Apple MacBook Air MC966LL/A 13.3-Inch Laptop

Size: 256GB

Product Description

The new MacBook Air is up to 2.5x faster than before. It features the latest Intel Core i5 dual-core processor, high-speed Thunderbolt I/O, a backlit keyboard, and OS X Lion, the next major release of the world's most advanced desktop operating system. MacBook Air also comes standard with flash storage, so it boots up in seconds, launches apps quickly, and wakes from sleep in an instant. And a long-lasting battery powers MacBook Air for up to 7 hours and offers up to 30 days of standby time. All in a durable unibody design that's thin, light, and ready for anything.

The MacBook Air with 13.3-inch screen--light, thin, and strong enough to take with you wherever you go (view larger).

This version of the MacBook Air (model MC966LL/A) sports a 13.3-inch high-resolution display, 1.7 GHz Intel Core i5 dual-core processor, 256 GB of flash memory storage, 4 GB of RAM, an Intel HD Graphics 3000 integrated graphics processor, and an SD card slot (see full specifications below). It also comes with the iLife software suite, which includes the latest versions of iPhoto, iMovie, and GarageBand.

OS X Lion

Every Mac comes with OS X Lion, the latest release of the world's most advanced desktop operating system. With over 250 features including Multi-Touch gestures, Mission Control, full-screen apps, and Launchpad, OS X Lion takes the Mac further than ever.

Key OS X Lion Features
  • Mission Control provides a bird's-eye view of everything running on your Mac.
  • Launchpad puts all your apps front and center for easy access.
  • View apps full screen and switch between them with a swipe.
  • Interact with your Mac using intuitive new Multi-Touch gestures.
Key Features Flash Memory Storage

By replacing the standard spinning hard drive typically found in laptops (as well as desktop PCs) with flash memory, the MacBook Air delivers an almost instantaneous boot-up when you open the display, as well as faster application launches and snappier overall performance. Additionally, Apple has shed the enclosure that typically surrounds flash memory (usually about the same size as a standard hard drive), thus giving it a smaller footprint and helping to decrease the size of the MacBook Air.

The ultimate do-everything, take-everywhere notebook(view larger). Revolutionary Thunderbolt Technology

Developed by Intel with collaboration from Apple, high-speed Thunderbolt I/O (input/output) technology delivers an amazing 10 gigabits per second of transfer speeds in both directions. Built into the MacBook Air, the Thunderbolt port allows you to connect to new Thunderbolt-compatible peripherals as well as existing USB and FireWire peripherals using simple adapters. You'll be able to move data up to 20 times faster than with USB 2.0 and more than 12 times faster than with FireWire 800, and you can daisy-chain up to six high-speed devices without using a hub. Thunderbolt also supports DisplayPort for high resolution displays and works with existing adapters for HDMI, DVI, and VGA displays.

Glass Multi-Touch Trackpad and Backlit Keyboard

With the smooth, glass Multi-Touch trackpad, the MacBook Air makes it easy to navigate OS X Lion and your software applications. You can pinch, swipe or rotate images on the display screen with the brush of two fingers, or add more digits for a four-fingered vertical swipe to open Expose and quickly glance at all of your open windows.

Spacious, full-sized keyboard with backlighting (view larger).

In spite of its compact size, the MacBook Air has a full-size keyboard for comfortable, natural typing, and it's backlit so you can keep typing in even the dimmest light.

Integrated FaceTime Webcam

You'll be able to easily connect with friends, family, and business colleagues using the MacBook Air's FaceTime camera, which is integrated into the thin bezel above the display. And with Apple's FaceTime application, you're not limited to video chats with other Macs--you can now make video calls to iPhone and iPod touch users (Wi-Fi connection required for mobile users).


Specifications
  • 13.3-inch LED-backlit glossy widescreen display with a 1440 x 900-pixel resolution
  • Up to 7 hours of wireless productivity plus up to 30 days of standby time
  • 1.7 GHz Intel Core i5 dual-core processor with 3 MB shared L3 cache.
  • 256 GB flash memory storage
  • 4 GB installed RAM (1333 MHz DDR3; maximum capacity)
  • Intel HD Graphics 3000 processor (with 384 MB of DDR3 SDRAM shared with main memory) for an outstanding everyday graphics experience.
  • Built-in FaceTime camera for video chatting
  • Wireless-N Wi-Fi wireless networking (based on 802.11n specification; 802.11a/b/g compatible)
  • Bluetooth 4.0 technology for connecting with peripherals such as keyboards, mice, and cell phones.
  • Two USB 2.0 ports with networking using optional Apple USB Ethernet adapter
  • SD card slot
  • Thunderbolt port with support for up to 2560 x 1600-pixel resolution (compatible with Mini DisplayPort devices)
  • Built-in stereo speakers along with omnidirectional microphone, headphone port
  • Full-size keyboard with backlighting
  • Multi-Touch trackpad for precise cursor control; supports inertial scrolling, pinch, rotate, swipe, three-finger swipe, four-finger swipe, tap, double-tap, and drag capabilities
  • Dimensions: 12.8 x 8.94 x 0.68 inches (WxDxH)
  • Weight: 2.96 pounds
What's in the Box

13.3-inch MacBook Air, 45W MagSafe power adapter, AC wall plug, power cord, printed and electronic documentation

Note: The MacBook Air does not come with an optical drive, however OS X Lion offers the convenient DVD or CD Sharing feature, which lets you wirelessly "borrow" the optical drive of a nearby Mac or PC. So you can install applications from a DVD or CD and have full access to an optical drive without having to carry one around. Additionally, you can connect an optional optical drive (such as the MacBook Air SuperDrive) via one of the USB ports.

Included Software
  • OS X Lion Includes Mail, Address Book, iCal, the Mac App Store, iTunes, Safari, Time Machine, FaceTime, Photo Booth, Mission Control, Launchpad, AirDrop, Resume, Auto Save, Versions, Quick Look, Spotlight, QuickTime, and more.
  • Lion Recovery OS X Lion includes a built-in set of tools for repairing your Mac in the Recovery HD, a new feature that lets you repair disks or reinstall OS X Lion without a physical disc.
Limited Warranty And Service

The MacBook Air comes with 90 days of free telephone support and a 1-year limited warranty, which can be extended to 3 years with the AppleCare Protection Plan.

AppleCare Protection Plan

Because Apple makes the hardware, the operating system, and many applications, the Mac is a truly integrated system. And only the AppleCare Protection Plan gives you one-stop service and support from Apple experts, so most issues can be resolved in a single call. Extend the complimentary service and support on your Mac to 3 years from the original Mac purchase date with the AppleCare Protection Plan. You get direct telephone access to Apple experts for technical questions, and you get global repair coverage--including both parts and labor--for your Mac and select Apple peripherals.

Optional Accessories and Related Products

Apple Thunderbolt Display The world's first Thunderbolt display doesn't just give you more pixels. It gives you more possibilities. Built-in Thunderbolt technology lets you connect as many as six devices through a single port and transfer data up to 20 times faster than with USB 2.0.

Time Capsule Time Capsule is the revolutionary backup device that works wirelessly with Time Machine in OS X Leopard or later. It automatically backs up everything, so you never have to worry about losing important files. It also doubles as a full-featured 802.11n Wi-Fi base station. Choose from 2 TB and 3 TB models.

Apple MacBook Air SuperDrive If you want to burn discs or install software you already own on disc, consider the external USB-based MacBook Air SuperDrive. It takes up very little space and easily connects to Mac mini with a single USB cable--there's no separate power adapter.

Apple USB Ethernet Adapter The Apple USB Ethernet Adapter is a simple, one-piece external adapter that plugs into the USB 2.0 port of your MacBook Air to provide 10/100BASE-T performance. Simply plug your Ethernet cable into the RJ-45 connector--no external power is required. It's small, light, easy to install, and even easier to use.

Apple Mini DisplayPort to DVI Adapter The Mini DisplayPort to DVI Adapter lets you connect an advanced digital monitor, such as the Apple Cinema Display, to your MacBook Air.

Apple Mini DisplayPort to Dual-Link DVI Adapter Use the Mini DisplayPort to Dual-Link DVI Adapter to connect your MacBook Air to a 30-inch display that includes a DVI connector, such as the 30-inch Apple Cinema HD Display.


Apple Mini DisplayPort to VGA Adapter The Mini DisplayPort to VGA Adapter lets you connect a standard analog monitor, projector, or LCD that uses a VGA connector or cable to your MacBook Air.

This review is from: Apple MacBook Air MC965LL/A 13.3-Inch Laptop (NEWEST VERSION) (Personal Computers)

Update November 7, 2011:

*There was a firmware update for the MBA that I applied after the 10.7.2 update and it seemed to fixed the wifi drops.

I've been testing it for 2 weeks and so far so good!

Things I like:

+ Light weight; 2.9 lbs (1.3 kg). You can easily hold it with one hand - the MBP 13" is noticeably heavier at 4.5 lbs.

+ Solid build quality like the MBPs. Chassis is rock solid, no keyboard flex, screen housing is rigid, and the lid has minor flex.

+ Better ergonomics than the MBPs; the palm rest edges don't dig into your wrists like the edges on the MBPs do.

+ Same great multitouch trackpad and the backlit keyboard makes a return.

+ The screen is a pleasure to use with it's high resolution (1440 x 900) and semi-gloss finish.

There is no glass cover so there will be dramatically less reflections compared to the screen of the MBPs

+ 18 second boot ups and 3 second shut downs. Resumes from sleep within 3 seconds.

+ The two USB 2.0 ports are on opposite sides of the laptop (less clutter than MBP)

+ Speakers are surprisingly loud; they can fill up a small room.

+ Runs extremely cool and it's so quiet that you'll wonder if the fan is running at all.

I can definitely feel heat ~ 87 degrees F on the MPB 13's underside after 6 hours of use

where as the MBA 13's underside stayed relatively cool.

+ Runs Windows 7 just as cool and quietly. (I installed Windows 7 via flash drive)

+ Performance is almost identical to the MBP 13" 2011 on everyday tasks because the Core i5

CPU can turbo boost to 2.7 GHz and the SSD allows for instant application launching.

+ Gaming: it has the same Intel HD Graphics 3000 as the MBP 13" 2011. I was able to run

Starcraft II smoothly at low settings on native resolution. Medium settings also ran nicely but

you get less FPS during large battles. League of Legends ran smoothly at medium settings

30 FPS flat) on native resolution.

_______________________________________________________________________________________________________

Things I don't like:

- *IMPORTANT* Wifi drops constantly on my unit (skip to the bottom to read more)

- The keyboard is shallower and has less travel than the MBP keyboards (you'll get used to it

within a few days)

- The screen has less color gamut than the MBP 13's screen. This screen covers only 46% of

sRGB color spectrum where as the MBP 13's screen covers 77%. For image editing,

I would use an external monitor.

- The vertical viewing angles aren't so great. One minute tilt of the screen causes colors to shift

dramatically (for example: a purple color can change from lavender to light blue as you tilt

the screen backward or forward). Again, I would use an external monitor for tasks in

which accurate colors are mission critical. For everyday use it's not noticeable and is

actually easier on the eyes than the glare-prone screens of the MBPs.

- Not all models come with the same SSD. There are 2 variations; a Samsung SSD and a

Toshiba SSD. The Samsung SSD significantly outperforms the Toshiba SSD in

benchmarks (check the AnandTech review)

To check what SSD you have, click on the Apple logo -> About this Mac ->

more info/system report -> then look on the left hand side and click on "Serial- ATA".

If your SSD's serial number starts with "SM" it's a Samsung and a "TS" means it's a

Toshiba.

- I personally get 5 hours of battery life max on a single charge while surfing with 10+ tabs open on safari; I got

~7 hours doing the same tasks on the MPB 13 2011. My activities included watching

YouTube videos, viewing flash content on tech and news sites, reading/writing email,

and using AIM.

- No FaceTime HD Camera (720p) as on the MPBs. The quality difference is, unfortunately,

very noticeable.

- The integrated microphone is located on the side of the laptop instead of on top of the keyboard

as on the MBP. During Skype calls, my buddies told me that my voice sounded muffled

when using the Air. Using a headset with a mic, I was able to improve the sound quality.

_________________________________________________________________________________________________________________________

Conclusion: Which one should you get?

As a college student, I would recommend the Macbook Pro 13". The Air is more than capable of being a primary machine because of it's superb performance and overall very good screen. For everyday tasks, it should be snappy and a pleasure to use. However, students will get a $100 discount on the Pro while the Air only provides a $50 discount. This means that there is a price difference of $150 (for students). The storage space on the Air is limited (128GB or 256GB) while the Pro comes standard with 320GB. Plus, you can always add a SSD to the Pro later on. The Pro will be the better choice for creative students because it's screen has more color gamut than the Air's. Lastly, you are getting a full voltage processor which can make a difference in video encoding or other CPU intensive tasks.

If you are not a student:


If you value the extra ports (Ethernet, Firewire, optical drive), a high gamut screen (although more reflective), and the ability to upgrade later down the line - go for the Pro.

If you prioritize portability (light weight), higher screen resolution, fast boot ups/shut downs, and less reflections - go for the Air.

In everyday performance the Air feels faster when booting up and launching applications because of its SSD. In CPU intensive tasks, the Pro will have a slight edge but not much. (the two CPUs are actually pretty neck to neck on GeekBench benchmarks). They both have the same graphics chip but note that the Pro will get better battery life (1-2 hours more) than the Air because the Pro has a bigger capacity battery (63.5 watt-hours vs. 50 watt-hours)

Unfortunately, my unit is affected with a wifi drop problem. I don't know if you will encounter the same issue but if you buy an Air from an Apple Store, make sure to test the wifi out by using it in multiple locations and connecting to different networks. If you encounter any erratic wifi drops within the first 14 days - demand a refund or an exchange.

_________________________________________________________________________________________________________________________

Update: August 2nd, 2011: After one week of use

I noticed that the laptop gets very hot when playing flash content, primarily YouTube videos (720p and 1080p) It could be that Mac OS X Lion does not get along with Flash as this extreme heat also occurs on the MBP 13 2011 (running Lion). The fans start roaring pretty loudly and the aluminum panel above the keyboard gets toasty. I wouldn't touch it.

After exiting YouTube, the fans quiet down and temperatures drop. For casual use like emailing, web surfing or word processing the laptop runs extremely cool and quiet. In Windows 7, the laptop periodically gets hot while just surfing the web (no YouTube videos) and the fan kicks in and then quiets down after a few minutes. It gets hot when watching YouTube videos as on Lion.

Adobe has reported that there has been some compatibility issues with Mac OS X Lion. So my assumption is the extreme heat when watching YouTube videos might be remedied when Apple releases updates to Lion (it's still buggy).

_________________________________________________________________________________________________________________________

Update: August 3rd, 2011: Wifi Drop Problem.

I have noticed that the MBA cannot maintain a stable wifi connection. The connection constantly drops around every 30 minutes of use. During a lengthy 2GB download, the download stopped at least 4 times and I had to turn the wifi on and off in order to reconnect. This also occurs in daily usage while surfing the web and also occurs both in OS X Lion and Windows 7. This is not a router issue I used a D-Link wireless N and a Netgear wireless N router). I have two Sony Vaios, a HP, and Ipad 2 connected to the same network and they work fine; no drops. The MBP 13 also works fine. Even switching between the two routers did not help. The Air still dropped wifi connections. When the wifi does work, it's very fast.

I did a test today at a Starbucks shop and connected to their wifi using the MBA. It dropped the connection every 20-30 minutes. A quick Google search reveals that I am not alone in this issue. There are many other MBA 2010 users that have the same problem. It would make sense that the new chipsets in the MBA 2011 models would fix it but they CLEARLY have not. I have tried many trouble shooting methods as recommended by Apple; both routers are updated to the latest firmware, OS X Lion is up to date, and I switched the router channels from 6 to 1. None of it worked. The laptop continues to drop signal just as frequently. This is extremely disappointing.

I think I will keep testing for a few more days and return this MBA before the 14 days return policy expires. This issue has been known by MBA 2010 users and I dislike how Apple has not officially acknowledged that there is a wifi problem. I won't say that I don't recommend the Air. Buy it at your own risk and make sure to test out the wifi if you do buy one!

_________________________________________________________________________________________________________________________

Update: August 4th, 2011: Visit to Apple Store and making the exchange.

I went to the local Apple Store and a technician told me that it could be a problem with the product line. I returned the Macbook Air 13 and exchanged it for a Macbook Pro 13 2011. I miss the higher resolution and semi-gloss screen of the Air, but hey: the wifi works!

Good luck if you buy an Air, I hope you don't get a lemon like I did. If you do buy, tell me how it goes. Cheers :)

_________________________________________________________________________________________________________________________

Update: August 16th, 2011

Apple has released patch 10.7.1 for Lion. Apparently, it will help "improve wifi stability" among other bug fixes in Lion.

_________________________________________________________________________________________________________________________

Update: August 18th, 2011.


Upon hearing of the 10.7.1 update, I went to make an exchange for a new base model 13" Air. Out of the box, the wifi drops erratically like on my first Air. However, after applying the update the connection seemed to remain stable. More testing will need to be done before a solid conclusion can be reached. As a note, the update didn't work for some unfortunate Air owners with the problem. If you would like to follow our journey on troubleshooting this nightmare, Google "MacBook Air 2011 wifi" and it should be the 2nd link down - go to the last few pages.

Will keep you guys posted after more testing.

__________________________________________________________________________________________________________________________

August 20th, 2011

Bad news. My new unit drops connections but the frequency varies. On one occasion it dropped every 2-3 minutes during a Skype call. All my other devices on the network worked fine during that incident and I had to toggle the wifi off and on to reestablish a stable connection.

Wifi connectivity upon waking from sleep seemed to be improved. A connection is established within a few second after opening the lid - much faster than the usual 20 seconds it took to reconnect on my first unit.

I sometimes wonder if there is a hardware issue. I notice that when I relocate the Air to another spot in the house while still on the wifi can drop. I did several tests in the house and observed the Air dropping wifi when I moved CLOSER to the router. Strange. Also, when Bluetooth is enabled all hell breaks loose. The connection drops VERY frequently and disabling Bluetooth restores a stable connection. This effect is reproducible on my unit.

Other than that, my connection is stable most of the time. The behavior described above only occurs in short bursts and goes away. I would say the wifi on the Air is still very useable when there are no annoying interruptions as described. I'll need to do more testing with different networks.

_______________________________________________________________________________________________________________________________________

Update: August 22nd, 2011

I have been on my school's wireless network for the past 2 days and everything has been working smoothly with no wifi drops so far. I'm hoping that it'll stay this way and will report on how wifi performs when I use the Air around campus.

_______________________________________________________________________________________________________________________________________

Update: August 27th, 2011

During my first week of using the wifi on campus, the Air proved to be pretty solid and only disconnected twice. There are a few annoyances though - for example: when I boot up or wake the Air from sleep and get to the desktop it takes around 10 seconds+ to connect to wifi. Other times, it won't automatically connect to a known network (my school's wifi) so I had to toggle the wifi off and on. Other than those minor annoyances in trying to connect to wifi, once connected - the connection is very stable. I think the boot up/waking issues will be resolved in the next software update.

_______________________________________________________________________________________________________________________________________

Update: September 14th, 2011

After 2 more weeks of use, my unit's troubles of connecting to wifi upon waking and booting up are definitely consistent. In Lion, the "resume application" after restart/shut down feature would load an empty Chrome/Safari webpage with a "not connected to internet" error upon booting up. Obviously, the Air takes awhile after booting up to connect and sometimes doesn't connect at all.

Under Windows 7, my unit is prone to dropping wifi randomly. It's reproducible when playing LoL - I disconnect once per game and I can reproduce this observation every game.

I guess the drivers for Windows 7 aren't too great.

I would have been happier with a MPB 13" but I hope Apple will release a fix soon...

_______________________________________________________________________________________________________________________________________

Update: September 26th, 2011

I met some students on campus who own the 2011 13" i5 Air and they have the same problem as well! Glad I'm not alone but Apple seems to be in no hurry to fix this. I've been getting horrible wifi performance as of late while in the room and the closest router is a mere 8 feet away outside the door. Listening to online radio, it stutters every few seconds and is unplayable and don't get me started on doing online homework. Submitting an answer online would frequently be met with a disconnection - it's frustrating and unreliable when I'm trying to work.

Another issue that developed is the noisy fan. Watching low quality NFL highlight videos causes the Air to act like a jet taking off. The fan spins loudly and a great deal of heat is produced on the top panel of the keyboard - primarily on the left side. All this from watching a low quality video? that's pathetic. I think this is a Mac OS Lion issue.

The latest issue is that the Air developed a creak whenever I pick it up and move it around. I heard the noise when I first got it but it wasn't as frequent. As of late, the chassis of the

Air would creak whenever it was touched. Even typing on the keyboard and using the touchpad would produce this noise. I think the problem is with the screws being loose and thought I can remedy the problem easily until I noticed that Apple uses obscure screws for the Air called pentalobe screws. The only way to fix it is to order a pentalobe screw driver online (it's around $10). By the way, one of my friend's Air creaks too.


I apologize if I sound antagonistic against the Air but that's because I'm frustrated and disappointed. After going through 2 units I am still getting the same problem - not to mention the friends who experience it as well.

_______________________________________________________________________________________________________________________________________

Update October 15th, 2011

the 10.7.2 update has resolved wifi drops for some but others on the Apple forums still experience problems. I updated two days ago and the connections have been smooth so far.



These are our most popular posts: can you daisy chain routers supporting air cards

bestshopping Apple MacBook Air MC966LL/A 13.3-Inch Laptop

Youll be able to move data up to 20 times faster than with USB 2.0 and more than 12 times faster than with FireWire 800, and you can daisy-chain up to six high-speed devices without using a hub. ... Two USB 2.0 ports with networking using optional Apple USB Ethernet adapter; SD card slot; Thunderbolt port with support for up to 2560 x 1600-pixel resolution (compatible with Mini DisplayPort devices); Built-in stereo speakers along with omnidirectional microphone, headphone port ... read more

Imagine the Apple Thunderbolt Display… without the display ...

With netbooks you can at least plug in a normal display, keyboard, and mouse without adapters and dongles, but the MacBook Air and Sonys new Vaio Z are certainly a sign of things to come. ... Thunderbolt Displays and MacBook Pro daisy- chained ... Ahhh! Yes, that is totally possible — Thunderbolt basically extends PCIe… so you could have a discrete graphics card in there. It would .... Western Digital My Book 6TB NAS + Netgear Router $469.99 FREE SHIPPING ... read more

Quick Takes on Mac Performance Products and Issues

One discovery is that sync SSDs can do Finder Duplicate of a larger folder of files 80% faster than lower priced async SSDs. Well give you details soon. November 30th, 2011 -- Seagate is shipping the second generation Momentus XT 750 GB 7200RPM SATA 6Gb/s ... Slashgear observed two LBDs daisy-chained clocking 827MB/s read and 353MB/s write. ... September 14th, 2011 -- After the EFI Firmware Update 2.1 on the 2011 MacBook Air, we repeated our Target Disk Mode tests. read more

PCI wants to squash Thunderbolt

Didnt ATI basically already do this with their external graphics card gizmo? ... 1. wrong: youre forgetting the protocol router silicon on either side op the link, enabling daisy chaining and multiprotocol routing support. 2.partly ... read more

Related Posts



0 コメント:

コメントを投稿