ATEN UC2324 4 Port USB To RS 232 Hub, 1.1 & 2.0 Compatible, Supports Serial Interface Automatic Handshake Mode, Up 115.2 Kbps Data Transfer Rate, OS Support Windows 2000/2003/XP/NT

Easy way to add 4 RS-232 serial ports and is fully compatible with USB 1.1 and USB 2.0 Supports RS-232 serial interface, automatic handshake mode, hot-swapping, plug-and-play, and both bus and external power Up to 115.2 Kbps data transfer rate for each serial port and has dual data buffers for each upstream and downstream data transfer Built-in 16KV ESD protection and doesn't require any IRQ, DMA, I/O address resources Works with cellular phones, PDAs, digital cameras, modems and ISDN terminal adapters and comes with OS support - Windows 2000/2003/XP/NT