Tested. Working perfect. See photo. With CPU Celeron 500MHz & I/O shield
 
Chipset Intel 440ZX
Socket Socket 370 (PGA370)
FSB speed 66MHz
Form factor microATX (max 244 x 244 mm)
Dimensions 244 mm x 244 mm
Cache None/Integrated in the CPU
Max RAM size 256MB(PC100)
RAM type SDR UDIMM
PSU connector ATX 1.x (20-pin ATX)
I/O ports
1x 3.5mm Audio Combo
1x Floppy interface
1x Gameport
2x IDE interface
1x IrDA
1x PS/2 keyboard
1x PS/2 mouse
1x Parallel
2x Serial
2x USB 1.x
Expansion slots
1x 16-bit ISA
1x 3.3V AGP
3x 32-bit PCI