Appearance: UsedFunctionality: WorkingDescription:============As pictured, a 486motherboard with an "OPTI Local Bus" slot. Configured with a 486dx 33mhz, 128kb Cache,4MB of RAM, 5x 16-Bit ISA, 2x 8-Bit ISA. All jumper settings areprinted on board – so no manual to loose. CPU and clock are socketed for easychanging, board official supports from 16mhz to 50mhz bus speeds as well as256k of cache. Battery was removed to prevent leakage – board is undamaged, hasconnector for an external battery (if desired).Board can beupgraded and customized to your needs, please contact us.About Us:=========The ComputerPreservation Group is dedicated to the preservation of historical computers. Tohelp fund ongoing operations, select items are made available.Thank you for your support!Warranty andReturns:=====================We understand thatthere may be compatibility issues, space constraints, or it just doesn’t lookperfect. This item can be returned within 14-days for ANY reason. However,shipping to and from is not refundable. Shipping:=========- Local pickup isalso available at no cost.Stock#:4871