USB wifi adapter for Macbook Pro

I access a wireless network with my Macbook Pro. The signal is a little weak and I am seeking to increase the reception without moving the computer or modifying the broadcast, so I am looking at USB wifi adapters. Two questions:
- Do these really result in better reception?
- I see that I can spend as little as $8 or as much as $50.  Does $50 get better reception than $8?

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allelopathAsked:
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fm250Connect With a Mentor Commented:
Yes you have wireless N which supports previous ones G and B.

therefore, you don't realy need a usb adapter. you may look to upgrade your wirless router if it is G. You may also change your DSL if it is too slow.

hope this helps!
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fm250Commented:
If the Macbook pro is the old module and you have wireless N then the you might get better signal with usb wireless adapter.
 
however if your mac is new and you have wireless N. then it won't do any better.

- as for second question, the low quality one might give you many problems (it could also work fine). it depends, but sometimes I don't trust the very cheap ones much.
hope this helps
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fm250Commented:
the first line should read:

If the Macbook pro is the old module and you have wireless G
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fm250Commented:
So, why don't you check your wireless adapter first and post back!
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strungCommented:
If you get a USB wireless adapter, check first to make sure it comes with Mac drivers.
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allelopathAuthor Commented:
How do I determine if I have wireless N or G?
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strungConnect With a Mentor Commented:
Pull down the Apple Menu to About this Mac and hit More Info. You should find the Airport adapter under the Hardware Tab.
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allelopathAuthor Commented:
Nothing under Hardware with respect to wireless.
I see Network -> AirPort, so I will assume this is the correct place to look.
Under there I see:
Interfaces:
  en1:
  ...
  Supported PHY Modes: 802.11 a/b/g/n

So I have both G and N?
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fm250Commented:
Some other recommandations to try are:

- Move your wirless router up on the wall
- put it where there is no solid blocking walls
- turn it off for a while and then turn it back on

hope this helps!
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allelopathAuthor Commented:
What about something like this? I think this might help because the location of the Macbook Pro is kinda down low.

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strungCommented:
Unless it has Mac drivers, it probably won't work.
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fm250Commented:
allelopath,
It won't do any good if the signal is already low. if your wireless is far away you may try wireless bridge or extender, it will extend the signal for  you.  

http://www.amazon.com/Nyko-Wireless-Net-Extender-Ethernet/dp/B0000C6EDH

http://www.bestbuy.com/site/Networking/Wireless-Network-Extenders/pcmcat161100050044.c?id=pcmcat161100050044 
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maximus5328Connect With a Mentor Commented:
just as stated in previous comments, a USB adapter will not improve your wireless signal.
you can improve the signal by making sure that your router operates on wireless N only (not the so called mixed mode, aka b/g/n mode)
if the router is already on wireless N only mode and you still experience low connection speeds then your options are to extend the signal either by repeater or wired extension.
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