specifics:

Brand: AMD 
MPN: 109-C29657-10 HD6970M 
Memory Size: 2GB 
Chipset: 216-0811000 
Interface:MXM 3.0 Type B 
Dimension: 82 x 105 mm 
Chip: AMD Radeon HD 6970M 216-0811000 109-C29647-00 
Compatible with: For Apple imac 27" A1312 mid 2011 laptop 

More details please check the pictures. 

Package include: 
HD6970M Graphic Card * 1 
Graphic card tested for 24h  
for iMac 27" 2011 -  6970M 2GB 
warranty for 3 months
Shipping 
* we ship it via Hong Kong Post Air-mail or Singapore Post Air Mail (if need express please contact us)
* item will ship to worldwide and as gift.
* please make sure that your shipping information is confirmed in ebay and paypal.

* Normally it will take 7-15days to arrive USA.UK 

,Canada,Australia,Japan,20-30days to other country.
* please cotact us if you still have not receive your package within 30days.