Astrotek PCI Serial & Parallel Card, 2 x Fast Serial RS232 DB9 Port, 1 x DB25 Printer Port (DB25 via Cable & Bracket), Supports both PCI 3.3V and 5V, PCI specification v2.3 compliant, PCI compatible Dual UART (16C450/550/552), Serial Port Data rates up to 4 Mbps per port, 16-byte transmit-receive FIFO (UART), Programmable baud rate generator, Modem control signals, 5, 6, 7, 8 bit characters selection, 1, 2 stop bit, Even, Odd, No Parity, or Force Parity generations, PCI compatible IEEE 1284 Printer Port, Supports SPP, Nibble, Byte, PS2, EPP, ECP Multi-mode, Fast data rate up to 2 MB/s, Drivers support Windows 98SE or above