Since more than one year in continuous operation! Have the USB port bought in order to connect my external devices, such as laser printers, photo printers, scanners, multifunction keyboard and laser mouse comfortably on my laptop can. The design is beautiful and practical. The active devices are displayed via LED. The USB ports seem to be very stable. The cable from the computer to port is about 90cm long. So you can easily attach under the desktop port also. Is recognized under Windows7 immediately and made no problems so far. From me an absolute recommendation! Tip: If there are several Acer laptops can plug it to USB 3.0 ports only when Windows7 is fully started and all the drivers are loaded, there are problems with the WLAN module otherwise.