Apple iMac 21.5" A1311 Series 820-2784-A Intel Socket LGA1156 Logic Motherboard. Apple meets the current and future demands of high performance, power embedded computing, making it ideal for communications, transaction terminal, interactive client, industrial automation applications as well as for standard home use.

Apple Part Number: 820-2784-A
Compatible Part Numbers: 661-5534 661-5538 631-1429
Compatible Models: Apple iMac 21.5" A1311 MC508LL/A MC509LL/A Mid 2010 Series

Please Note: This motherboard does NOT come with a CPU.