Apple 661-5305 820-2494-A Logic Board for iMac 21.5" A1311. Apple Motherboard Raises The Bar Of PC Industry And Deliver A Full-value, High-performance Solution For Today's Most Demanding Tasks.

Manufacturer: Apple
Part Numbers: 661-5305 820-2494-A 31PIFMB0070 CE3F
Compatible  Models: iMac 21.5" 3.06GHz Core 2 Duo ( A1311 ) Late 2009 MC413LL/A MB950LL/A

Specifications:

CPU Socket LGA775
Supports Intel 3.06GHz E7600 CPU
4 x USB Port
RJ-45 (LAN)
FireWire 400 1394a
FireWire 800 3200 b/c

Please note: This motherboard comes with Intel Core 2 Duo 3.06 GHz E7600 CPU and Heat sink