Full Details from Amazon.com : http://www.amazon.com/gp/product/B0012IMSWM?tag=onigi-20
Genuine Dell MotherBoard With Mounting Tray For Optiplex GX240 SFF/DT/SMT Systems Compatible
Form Factor Micro ATX Chipset Intel 845 CPU Supports Intel Pentium 4 Socket mPGA478
Memory 168pin SDRAM 2 Slots 1GB Max PC133
Disk Drive Interface IDE ATA 3366100 x 2 Floppy Disc x 1
Expansion Slots AGP x 1 PCI x 2
IO Connectors PS2 Mouse PS2 Keyboard Printer Port x 1 Serial Port x 2 Onboard Sound USB x 2 Network LAN 10100 x 1
