Apple 661-5307 logic board for iMac 21.5-inch Late 2009 models. Socket LGA775 platform supporting Intel Core 2 Duo processors up to 3.06GHz. Includes integrated graphics and audio, PCI Express connectivity for expansion, and native USB 2.0 support. This motherboard handles typical desktop workloads including productivity, web browsing, and light creative tasks suited to the iMac 21.5" form factor. Compatible with Late 2009 iMac builds; verify your exact model before ordering. Refurbished unit tested and guaranteed. Available via quote.