31IntroductionWelcome to the POS-566/566L 550MHz K6®-3 / PentiumProcessor Multimedia POS Control Board Computer. The POS-566/566L board is a LPX Spec. board, which equipped with highperformance Pentium® CPU, LCD/CRT and 10/100Mbps Ethernet,designed for the system manufacturers, integrators, or VARs thatwant to provide all the performance, reliability, and quality at areasonable price.This board has a built-in DiskOnChip™(DOC) Flash Disk Socketfor embedded application. The DOC Flash Disk is 100% softwarecompatible to hard disk. User can use any DOS command withoutany extra software utility. The DOC currently is available from2MB to 144MB.The POS-566/566L provides three 168-pin DIMM sockets for itson-board DRAM with max. 768MB. DIMM module is 3.3V SDRAM.The board’s Realtek RTL8139 IEEE 802.u network chipsetprovides 10MBps or 100MBps Ethernet with auto-sensing function.In addition, the POS-566 is also Creative Sound Blaster 16 andRoland MPU401 UART Mode compatible. This feature is notavailable in POS-566L.With its Isolated Digital I/O control for field site application, thisPOS-566/566L is the most advanced POS solution that supportsup to 550MHz processor.