16GB DDR3 SDRAM 1333MHz DDR3-1333/PC3-10600 - 1.35V ECC Registered 240-pin DIMM. For SERVERS only. Dell Certified replacement. Designed For Models: PowerEdge C1100, C2100, C6100, C6105, C6145, C6220, C8220, M420, M520, M610, M620, M710, M820, M910, M915, R210, R320, R410, R415, R420, R510, R515, R520, R610, R620, R715, R720, R815, R820, R910, T320, T410, T420, T620, T710; Precision T5500, T7500; Precision Fixed Workstation R5500, T5600, T7600