DELL A3132555 COMP 4GB DDR3-1333MHZ ECC 1.5V DR UDIMMAddOn 4 GB DDR3 SDRAM Memory Module For Server 4 GB (1 x 4GB) DDR3 1333 PC3 10600 DDR3 SDRAM 1333 MHz Dual rank Memory CL9 1. 50 V ECC Unbuffered 240 pin UDIMM Lifetime Warranty VPN: A3132555 AM SKU: RSC482729 UPC: 821455639801 4 GB of memory to heighten your computer's performance 1333 MHz speed to execute routine softwares at a steady pace DDR3 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate