Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tripp Lite works as advertised --but its not automatic.

The 4-port Tripp Lite U215-004-R USB Peripheral Sharing Switch works perfectly and without any issues. The devise arrived on time and as advertised. I was able to immediately direct connect printers and scanners to four computers with no problems. It quickly switch between computers switch indicates which port is selected (note you have to manually select the device I have not been successul at getting the hot-key to work not have I seen the Icon taks bar..) Power drawn through the USB cables does eliminates the need for seperate AC adapter.