USB Serial Adapter RS232 with 5Volt Output Option on Pin9 Selectable Via Jumper Great for Barcode Scanners, POS devices, Modems, PDAs, Cell phones, Digital Cameras and more serial legacy devices This USB to Serial converter allows you to connect a RS-232 serial device such as a modem to a USB port on your Desktop or Laptop PC One RS232 port Speed up to 921.6kbps USB Bus Powered - No Power Adapter Required