Features: Adds two 9-pin RS-232 serial port to PCIe enabled desktop computers, each port supports data transfer rate up to 250Kbps,Compliant with PCI Express 2.0 Gen 1. Works as either standard RS-232 port or with 5V or 12V power output for devices that require power (such as handheld scanners, table scanners, POS displays and many more). Configurable via jumpers. Single-lane PCI Express End-point Controller with PHY integrated; Full serial modem control with hardware and software flow control; Supports 5, 6, 7, 8 and 9-bit serial formats, and Even, Odd, None, Space and Mark parity; On chip 256-byte FIFO buffers in transmit and receive path for each serial port. Supports PCI Bus Power Management Interface Specification .Revision 1.2; Dual profile design installs into both full-size and low-profile system chassis with the included mounting brackets; Installs into any PCI Express slot of any lane width. Perfect solution to connect with POS system, industrial testing and control device, security system, logistic management equipment, printers, scanners, etc . Package Includes: 1PC x Serial Adapter Specifications: Material: plastic Size: approx.30x15cm/11.81x5.91in Color: green note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you