Vintage ASUS MES-B Rev. 1.01 Socket 370 Baby AT Motherboard - SiS 620 Chipset
Rare and highly sought-after Baby AT form factor Socket 370 motherboard manufactured by ASUS. Powered by the SiS 620 / 5595 chipset with integrated SiS 6326 2D/3D graphics, this board combines modern Socket 370 processor support with legacy chassis compatibility. Features two 16-bit ISA slots, four 32-bit PCI slots, three 168-pin SDRAM DIMM sockets, onboard DIP switches for manual FSB tuning, and standard 20-pin ATX power connectivity. The ultimate upgrade board for fitting a fast Celeron or Pentium III build into a vintage Baby AT desktop or mini-tower case.
Key Specifications:- Brand / Manufacturer: ASUSTeK Computer Inc. (ASUS)- Model: MES-B- PCB Revision: Rev. 1.01- CPU Socket: Socket 370 (PGA370)- Supported Processors: Intel Celeron (PPGA Mendocino) and Intel Pentium III (Coppermine 100MHz FSB)- Front Side Bus (FSB): 66 / 100 MHz (with overclocking options up to 133MHz via DIP switches)- Chipset: SiS 620 (Northbridge with green heatsink) + SiS 5595 (Southbridge)- Integrated Graphics: Embedded SiS 6326 2D/3D Accelerator (via internal VGA header)- Memory: 3x 168-pin SDRAM DIMM sockets (PC66 / PC100 SDR SDRAM, up to 768MB)- Expansion Slots: * 4x 32-bit PCI slots * 2x 16-bit ISA slots (ideal for period-correct Sound Blaster / AWE sound cards)- Super I/O Controller: Winbond W83877TF- Clock Generator: ICS 9248BF-79- Storage Interfaces: 2x Ultra DMA 33/66 IDE channels (40-pin), 1x Floppy drive connector (34-pin)- Hardware Controls: Dual onboard CTS DIP switch blocks for manual CPU bus and multiplier tuning- Onboard Ports / Headers: * 1x Physical 5-pin DIN keyboard port (AT style) * Internal headers for VGA, 2x Serial (COM1/COM2), 1x Parallel (LPT), 2x USB, and PS/2 Mouse- Power Connector: Standard 20-pin ATX power connector- RTC Battery: Standard CR2032 socket- Form Factor: Baby AT (approx. 8.7" x 9.8" / 22.0 cm x 25.0 cm)
Package Includes:- 1x ASUS MES-B Rev. 1.01 Socket 370 Motherboard (as pictured)