Ableconn PCI4S-954 4 Port RS232 PCI Serial Adapter Card with Power Output and 16950 UART (OXuPCI954 Chipset) - Optional 5V DC Output on Pin9 of DB9 Support 5V DC output in each Pin9 of DB9 connectors (total 2A5V DC supply from the card) for POS or other RS232-powered applications. The 5V DC output can be individually enabled/disabled for each DB9 Port. Built with PLX/Oxford OXuPCI954 chipset which enables high performance 16C950 UART and is 6C550, 16C650, 16C750 and 16C850 backward compatible. Includes both low profile and regular size PCI brackets. Fan-out cable design which helps avoid cluttered connections Four 16C950 High performance UART DB9M channels with 128-byte deep FIFO per transmitter and receiver. CE, FCC, and Fully RoHS compliant. Made in Taiwan.