Tripp Lite Keyspan High-Speed 4-Port RS232 Serial DB9 to USB Adapter Hub(USA-49WG) by Keyspan

Description

Connector 1 4x DB9 Serial;Plug & Play: Appear as standard COM ports;Bus Powered: No external power adapter required;Serial Adapter allows up to four serial devices to be connected to a single USB computer;Plug-and-play convenience - DB9 serial ports are seen as COM ports by your computer, and are available for use by any program that accesses COM ports;No need for an external power adapter - draws power directly from your computer via the USB connection;DB9 serial ports support data transfer rates up to 460 Kbps - four times the speed of a standard built-in serial port;DB9 serial ports support data transfer rates up to 460 Kbps - four times the speed of a standard built-in serial port