512MB 184PIN DIMM MEM3800-512D= Kingston is the world's largest independent memory manufacturer. In today's performance-driven environment, memory upgrades provide an easy, economical alternative to increase system performance. Every memory product Kingston offers is designed to help you get maximum performance at the best price to you. This memory is designed for Fujitsu ErgoPro , ErgoPro x365/500, ErgoPro x365/CL400, ErgoPro x565/450, ErgoPro x565/500; MICRON - NetFRAME NF3100/3101, NetFRAME NF3100/3101 (PIII); Zenith - Express5800 LS2400, Express5800 MC2400. This memory is designed for Cisco 2800 Series 2821/2851 and Cisco 3800 Series 3825/3845.