How can i install TP-Link TL-WN7200ND on Mac Os Version 10.6.7? Is there any driver for my Mc?

Hi
If you can't scan then it sounds as if your computer doesn't have the appropriate driver installed for scanning. There are a lot of drivers and other downloads here:
Printers
including a scanner driver for MAC OS 10.3 to 10.7. Since Yosemite is 10.10, I don't know if this would work for you, but I think it your most promising solution.
It may be worth disconnecting the printer and connecting it directly to the computer. If it scans and prints when directly connected then it is likely that the print server is causing the problem and if as you say there is no Mac software for it you may be in a no-win situation. The fact that you can print through it however does mean there is hope, because I have found this page which is described as manual installation of the server on Mac OS here
FAQ ID 347 How to install Print Server manually on MAC OS
but the OS is 10.6.4 so, I'm not sure.
Not as helpful as I had hoped but perhaps you can get something from this screed

http://www.tp-link.com/en/products/details/?categoryid=&model=TL-WN727N#fea
this link suggests that the tl-wn727n does not support the mac os.
Sorry, but probably not the answer you are looking for.

System Requirements:
Windows 7(32/64bits),
Windows Vista(32/64bits),
Windows XP(32/64bits),
Windows 2000
no 98 support.

As far as I can see from the TP-Link website this adapter is only for PC computers and does not have a mac driver. Sorry.

There are 4 different versions op the TP-Link TL-WN321G.
Look on THIS PAGE how to find the version and download and install the correct driver.

i have used a similar adapter on windows 7 as well as on ubuntu 10.04 (linux), and it detects it upon restart without any external drivers.

try on a system with any of these to confirm that the adapter is good. this could be a hardware fault.

also, try changing the card slot as there could be a problem with the slot.

if it works fine on these, then make sure you are using the correct drivers (the ones exactly for this device and not for another similar device)

It is ok if the driver is not digitally signed. There's no need to worry.

To enable the adapter:

1. Click on the Windows Start button
2. Type in "network"
3. Open "Network and Sharing Center"
4. On the left bar, click on "Change Adapter Settings"
5. Select your wireless adapter
6. Right click on the wireless adapter then select Enable.

If you cannot select Enable, it means your adapter is already enabled. The adapter has a gray icon due to it not being connected to a router.

I am glad to HELP YOU!

Unfortunately the manufacturer doesn't provide such a driver [for Mac systems]. If you ill tak a look HERE you will see that the driver work only on Windows systems.

Also take a look HERE.

GOOD LUCK!

Update your Wireless Adapter firmware @ http://www.tp-link.com/support/download.asp?a=1&m=TL%2DWR340GD

There are 3 versions for your product(TP-LINK TL-WN353GD, Important***select the correct firmware version to update. Then download the latest drivers(Setup Utility) & and install the drivers for your adapter from the TP Link site.
Link - How to look over the hardware version on a TP-Link device?

Hope it helps.