As best as I can find the motherboard is made by Dell based on an Intel 845GV chipset. For chipset details see http://www.intel.com/products/chipsets/845gv/index.htm The motherboard is reported by others to handle CPU up to P4 3.4GHz (should be verified with Dell), RAM max. is 1GB, and video is onboard only. Belarc Advisor gives lots of information about the internals of computers and it is free here http://www.belarc.com/free_download.html Tom Mayer ----- Original Message ----- From: "Roberto Safora Romay" <[log in to unmask]> I am trying to guess what motherboard is being used in a pc dell dimensionn 2400, but no information is placed on the PCB. The BIOS string doesnt show on the monitor. F2 option didnt yield results. Any advice to get what I want? TIA Roberto PCBUILD's List Owners: Bob Wright<[log in to unmask]> Drew Dunn<[log in to unmask]>