This is an IBM Six-Drive Board Assembly, 3.5 inch SAS Backplane upgrade kit with cage, it is FRU 41Y3154. It was made in Taiwan in January 2008. This is a NEW OEM product, it has never been used, it was originally made for use by an OEM as part of a system and packaged with OEM part numbers. We have re-packaged it for retail distribution. It is sold exactly as pictured and does not contain any additional parts or installation software.