HP 500W Flex Slot Platinum Hot-PlugLow Halogen Power Supply KitPart Number(s)Option Part# 865408-B21Spare Part# 866729-001Assembly Part# 865399-201Model# HSTNS-PL40-1866729-001 Compatible Servers and Storage Arrays:Proliant Gen9Proliant DL Series: DL360 (G10) DL380 (G10) DL385 (G10)Proliant ML Series: ML350 (G10)