HP 8GB 240-Pin DDR3 SDRAM ECC Registered DDR3L 1600 (PC3L 12800) Memory Model 731765-S21 Voltage: 1.35V Compatible System: Designed For: HPE ProLiant SL250s Gen8 Base 2U Left Tray Server, SL250s Gen8 Base 2U Right Tray Server Cas Latency: 11 Rank: 1Rx4