Powered by 586-133 MHz processor, 6-layer Model MZ104 withstands -40 to +85°C. Single-board computer incorporates ISA and PCI buses, plus other I/O support. Simple switch of jumpers changes processor speed from 133 to 33 MHz. Design features 2 RS232 serial ports, parallel and USB ports, I2C bus, dual watchdog timers, and dual EIDE and floppy drive support. Single 144-pin SO-DIMM socket accepts 2-128 Mbyte SDRAM; 32-pin DIP socket accepts flash disk. Board measures 3.55 x 3.775 in.