Keyspan usa-19hs driver make the use of keyspan high-speed USB adapter possible with the computer. It is software that is important to install before using Keyspan high-speed USB. It helps to connect PLCs, lab equipment, point-of-Sale devices, barcode scanners, GPS devices, modems, keyboards and mouse. There is no need for any power source to connect it. The drivers for this USB adapter only support Windows and Macintosh with all the available versions. You can download Keyspan USA-19HS Driver from here if you are facing issues related to the functioning of Keyspan USB adapter. A user guide would also be available for the further assistance.