Cisco 4GB DDR2 SDRAM Memory Module - Refurbished - 4 GB (1 x 4GB) DDR2 SDRAM - ECC - 240-pin - DIMM - 90 Day Warranty Allow convenient and fast access to the stored information your computer is actively using for maximum efficiency DIMM 4 GB memory allows you to have more programs open at a time DDR2 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computer's performance 1 x 4GB modules for enhanced memory reliability and productivity 240-pin for enhanced, dependable system performance with maximum usability Router device support for your ram module to allow enhanced performance and reliable memory solution DIMM form factor with 240-pin and 4 GB memory size effectively reduces minimizes the load on the server memory BUS to ensure maximum productivity