This StarTech.com PCI Serial Parallel Combo Card installs into a single PCI slot, adding a DB25 IEEE 1284 parallel port and two DB9 RS 232 serial ports to your system. The parallel port is ideal for connecting printers, scanners, plotters, and more, supporting SPP/Byte/Nibble/ECP/EPP modes and IEEE 1284 for speeds up to 1.5Mbps. The serial ports are suitable for connecting point of sale terminals, serial printers, PLCs, and other devices, supporting bi-directional RS232 speeds up to 115.2Kbps per port. With broad OS support including Windows and Linux, and included full-profile and low-profile brackets, this card offers wide installation compatibility. Backed by a lifetime warranty and 24/5 multi-lingual technical support.