LENOVO 0C19499 COMP 4GB DDR3-1600MHZ ECC SRX8 UDIMMAddOn 4GB DDR3 SDRAM Memory Module For Server 4 GB (1 x 4GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Single rank Memory CL11 1. 35 V ECC Registered 240 pin DIMM Lifetime Warranty VPN: 0C19499 AM SKU: RSC908118 UPC: 821455287194 4 GB of memory to heighten your computer's performance 1600 MHz of memory speed with CL11 latency skillfully manages the variety of apps and computational tasks DDR3 1600 PC3 12800 operates at an effective bus speed with