Compaq / HP Evo W4000 Workstation Motherboard, Socket 478 uATX 400FSB Part Number: 277500-001  Direct Replacement Motherboard With OnBoard Audio & Lan.

Specifications:

Part / Model Numbers: 277550-001 / 291042-001 / Evo W4000

Compaq P4 Deskpro S478

FSB 400mhz

2 SDRAM Slots Up To 1GB

1 AGP Slot

3 PCI Slots

2 PS-2 Ports

2 Serial

1 Parallel

2 USB Ports