Tripp Lite's USB to serial adapter enables a serial device to be connected to a computer through the USB port. Perfect for a PDA, digital camera, modem or ISDN terminal with a serial port. The adapter upgrades a traditional RS-232 serial port (DB9 male) to USB (a male). The unit features a portable design that does not require external power. A mini CD with drivers is included. Supports data transfer rates over 230 kbps. 17-in overall length.