SUNIX CDK1056P, Universal PCI serial communication board, allows users to expand four RS-232 DB9M COM ports, one Cash Drawer 6-pin RJ-11/12 socket, and one +12VDC power jack on PC-based system. The board is compatible with both 64 / 32-bit PCI architecture supporting 3.3 and 5V Bus, allowing it to be installed in virtually any PC-based systems. This card has 128-bytes onboard FIFO buffer and compatible with 16C950 UART specification. CDK1056P supports +5 or +12VDC of power from each serial port via COM 1st and 9th pin output. It's convenient for users connecting serial devices without addition external power supply. For the cash drawer interface, user can operate both +12 and +24 Voltage cash drawers by implemented SUNIX Windows based API (Application Programming Interface). Both RS-232 and Cash Drawer interface are designed with SUNIX UART controller, SUN1999 and as well built with many of SUNIX advanced features and technologies, making it the best solution for commercial retail automation applications.