Product description Size: 5 * 3.6cm interface: USB male /female Cable: triple shield Cable color: black Material: PVC Package contents: 1 * USB to serial adapter 1.USB male to RS232 male /female DB9 serial adapter connects a serial DB9(9 PIN) device, such as a modem, to a USB port on your computer. USB port with 1Mbps data transfer rate. 2.Uses latest PL2303 chipset. Supports Windows 10 / 8.1 / 8 / 7 / Vista / XP / 2000 / Linux 2.4 or above /and Mac OS X 10.6 and above. 3.Easy Connectivity. USB to RS232 adapter works with modems, Terminal Adapters, digital cameras, label writers, palm PCs, PDAs,cashier register,CNC,PLC controller,tax printer,POS, bar code scanner, label printer,and devices with DB9 serial ports. NOT compatible with Cutting plotter, SCM. 4.Gold plated connectors ensure high performance and extra durability. Powered by USB port, no external power adapter required. 5.Allows you to connect peripherals with serial interface (or Com port or RS232 interface) to an available USB 2.0 port on your computer.