Adds one RS-232 serial port to your computerDesigned to add one 9-pin RS-232 serial port to your computer via an available USB port Supports USB transfer rates up to 12Mbps and RS-232 data rates up to 921Kbps, ensuring efficient and fast communication between devices Works flawlessly with RS-232 serial devices such as modems, ISDN terminal adapters, PDAs, bar code scanners, label printers, and many more Built with quality FTDI FT232 high performance processor chip, which makes it one of the most reliable USB to Serial adapters on the market Fully compatible with serial apps on Windows and Mac 128 byte receive buffer and 256 byte transmit buffer utilizes buffer smoothing technology to allow for high data throughput ESD protection for RS-232 I/O's ±15KV, Human Body Model (HBM) Plug-n-play and USB bus-powered, no external power adapter is needed Replaces part# JU-CB1S12-S3. Comments: Update Marketing Imformation More from the Manufacturer