Supermicro SNK-P0046A4 2U+ Active Heatsink For LGA1156/ 1155/ 1150 Supermicro SNK-P0046A4 2U+ Active Heatsink For LGA1156/ 1155/ 1150 (SNK-P0046A4) Manufacturer: Supermicro, Model: SNK-P0046A4