Tested. Working perfect. See photo. With CPU Pentium MMX 166MHz (SL23X), 16MB EDO RAM, cables and cooler
 
Chipset Intel 430TX (PCIset TX Triton II)
CPU socket Socket 7 (PGA321)
FSB speeds 50MHz60MHz66MHz
Form factor Baby AT 
Dimensions 250mm x 220mm
Cache 256KB512KB
Max RAM size 256MB
RAM types 72-pin EDOSDR UDIMM
PSU connector ATX 1.x (20-pin ATX)AT (P8-P9)
I/O ports
1x AT Keyboard
1x Floppy interface
2x IDE interface
1x IrDA
1x PS/2 mouse
1x Parallel
2x Serial
2x USB 1.x
Expansion slots
3x 16-bit ISA
4x 32-bit PCI