This PCIe Parallel and Serial Combo Card installs into a single PCI-Express x1 slot in your computer, and adds a DB25 IEEE 1284 parallel port and DB9 RS 232 serial port to your system. The PEX1S1P950 is the latest version of our popular PEX1S1P952 combo card. Adds an LPT Parallel Port The controller card features an Asix AX99100 chip and enables you to connect a DB25 device to your desktop computer. The parallel port is ideal for connecting printers, scanners, plotters, point-of-sale terminals, PLCs, scientific sensors, medical equipment or oscilloscopes. The card can also be used in factories, to control or automate equipment. The parallel (LPT) port supports SPP/Byte/Nibble/ECP modes and is compatible with PCI Power Management 1.2 and IEEE 1284 for speeds up to 2.5Mbps. Adds a COM Serial Port The Asix AX99100 chip also enables you to connect a DB9 device using the same controller card, compatible with industry standard 16950 UART. The serial port is ideal for connecting point of sale terminals, serial printers, PLCs, control/automation in factories, scientific sensors, medical equipment, scanners and oscilloscopes. The serial (COM) port supports bi-directional RS232 speeds up to 921.6Kbps per port, available 256 byte FIFO buffer & 9th data bit. The card also features an optional SATA power input that enables you to add power to pin 9 on the serial port, and adjusted the power output between 5V and 12V using a jumper on the PCB. Wide Installation Compatibility This add-on card installs in a full/standard-profile PCIe 2.0 x1 slot (backward compatible with PCIe 1.1). For wide platform support the card is compatible with Windows (7 or higher), Windows Server (2003 or higher), and Linux (2.6.X or higher). PEX1S1P950 is backed by a StarTech.com lifetime warranty with free 24/5 multi-lingual North American based technical support. StarTech.com has been the IT professionals'' choice for over 30 years.