so slow that I event don't know or it can be so slow, or there is something wrong inside it(for example only one antenna is connected inside). tried 2.4 and 5ghz, slow on both bands in image you can see comparison laptop wifi vs usb wifi siting in same spot. this usb wifi adapter gives maximum 40Mbps, laptop wifi ~400Mbps. plus strangly I cant see one of my access point on channel 151 5gz band. so I wouldn't recommend it
works with synology dsm