DELL 370-14189 COMP 4GB DDR3-1333MHZ ECC 1.5V DR RDIMMAddOn 4GB DDR3 SDRAM Memory Module For Server 4 GB (1 x 4GB) DDR3 1333 PC3 10664 DDR3 SDRAM 1333 MHz Dual rank Memory CL9 1. 50 V ECC Registered 240 pin DIMM Lifetime Warranty VPN: 370 14189 AM SKU: RSC819802 UPC: 821455544679 4 GB of memory to heighten your computer's performance Up to 1333 MHz memory speed with Registered signal to manage your routine softwares with pace and accuracy DDR3 1333 PC3 10664 interface synchronizes electrical and clock