Arch Memory 4 GB (1 x 4 GB) 240-Pin DDR3 ECC UDIMM for HP ProLiant ML310e Gen8 v2 Xeon Quad-Core 3.3 GHz (736661-S01) RAM Arch Memory is a Registered Trademark of Arch Computer, LLC Bus Type: PC-12800 Data Transfer Rate: 1600Mhz Pins: 240 Pin DDR3 SDRAM