DETAILS: 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 the following systems:Lexmark C920 Series;Lexmark T640 Series;Lexmark T642 Series;Lexmark T644 Series;Lexmark W840 Series. Product Description Kingston memory - 128 MB - DIMM 100-pin - DDR Storage Capacity: 128 MB Upgrade Type: System specific OEM Manufacturer Equivalent Part Number: Lexmark 13N1523 Technology: DDR SDRAM Form Factor: DIMM 100-pin Manufacturer Warranty: Limited lifetime warranty ( Germany, Austria and France - 10 years ) ALTERNATE ITEM #: KTM1523/128 UPC: 0740617087246