Very handy 30

The switch is very convenient, and it works as described. So for example, only once quickly an external hard drive that you ev. Rarely needed on and then off again (eg increasing the service life, or saving ev. Annoying noise, if there is a noisy disk). In another application, I use the switch to a Bluetooth headset receiver rarely used practically turn in a multimedia PC, and disable again after using the headset (so that the sound is then placed back on the HiFi output).
It has in both cases (hard drive and Bluetooth stick) works as expected, so just so you would switch the device on and manually unplug ...

The only drawback may, depending on the application, the size (but is on the photo already visible):
For notebooks, where the USB ports are close together, it can, depending on the arrangement may be necessary to plug the USB switch on an outer sleeve, or you could be required to turn a short USB extension cable in between (as the USB-Shater something wider than typical USB memory sticks ...). But if you get infected the stick for example to a USB hub, the size is not a problem but most (after all, the switch for this is even USB3.0 compatible, which would explain the somewhat larger footprint for the additional lines ...)