Product Size: 5 * 3.6cm Interface: USB male / female Cable: triple shield Cable color: black Material: PVC Package contents: 1 * USB to serial adapter 1. This 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. The USB port offers a data transfer rate of 1Mbps. 2. Utilizes the latest chipset suitable for various operating systems, including Windows 10 / 8.1 / 8 / 7 / Vista / XP / 2000 / Linux 2.4 or above / and Mac OS X 10.6 and up. 3. Easy Connectivity. This USB to RS232 adapter works with modems, terminal adapters, digital cameras, label writers, palm PCs, PDAs, cash registers, CNC, PLC controllers, tax printers, POS systems, barcode scanners, label printers, and devices with DB9 serial ports. Not compatible with cutting plotters or SCM. 4. Gold-plated connectors ensure high performance and added durability. Powered by the USB port, no external power adapter is needed. 5. Enables connection of peripherals with a serial interface (or COM port or RS232 interface) to an available USB 2.0 port on your computer.