- also known as KM-S4-1, Rectron RT-4s3
        - Award Bios ID string  04/01/96-SIS-496-497/A/B-2A4IBJ11C-00
        - 4-72 pin SIMM slots  (1-128meg auto-detect FPM DRAM)
        - 3-32bit PCI Bus slots
        - 3-16bit ISA slots
note: - 128k/256k CACHE support in 4-32pin sockets + 1 TAG RAM socket
        - Award V4.51G  V.446 E2 05-02-96 Auto-Detect Flash Bios with Energy Mgmt.
        - Supports LBA Mode Control & Large Disk DOS Compatibility.
        - Green PC Connectors
        - SiS 85C496/497 chipset
        - Supports 3.3, 3.45, 4, 5volt CPU's with multipliers 2x/2.5x/3x
        - 237pin ZIF CPU socket 3 which supports these processors:
          INTEL 80486SX/SX2,80486DX/DX2/DX4,P24T,P24D
                SL80486SX/SX2/DX/DX2/DX4
          CYRIX CX486S(M6),CX486DX/DX2(M7),Cyrix 5x86
          AMD AM486SX/AM486DX/DX2/DX4,(SL)AM486DX4,Am5x86
          UMC GREEN CPU U5S-SUPER,U5SD
        - Supports speeds of 25/33/40/50/66/80/100/120 MHz.
        - 32bit Bus master for 2 IDE interfaces supporting 4 IDE devices.
        - Multi-I/O chip supports:
          Two PCI Enhanced IDE Ports (Supports 4 Devices PIO 0-4)
          Two High Speed Serial Ports (16550 UART Compatible)
          One Enhanced Parallel Port (SPP, EPP, ECP capable)
          One Floppy Drive Port (Supports 2 Floppy Drives)
        - Manufactured by: Jetway/JetBoard, ATC/UNITRON COMPUTER, AZZA, RECTRON