Vintage 486 motherboard with 256k cache in slot and AMD DX4-100 Enhanced CPU . This CPU has the "write back" cache and is one of the models that can be overclocked. Designed for Intel, AMD and Cyrix Socket 3 CPUs this motherboard supports ISA, VLB and PCI expansion cards. With 16mb of RAM.  Boots to bios with PCI video card. Manual available online.

Press "Delete" during startup to enter bios