The Tripp Lite Keyspan USA-19HS is a USB to serial (RS-232) adapter for Mac and PC computers. It is meant for connecting legacy serial/RS-232 devices with nine-pin DE-9 connectors to current computers having only USB ports.
Reviewed by 2 customers
Excellent price for a good device.
I purchased this USB to Serial adapter so that I may connect a serial device to my Mac (and Windows Virtual Machine running on Parallels). It was easy to install. Just had to load the Mac drivers and the Windows Drivers.