Given that, it is very difficult to get these advertised speeds unless you tweak both the modem router and your wireless product which also needs direct line of site. With that said, we tested this product in terms of performance with a Wi-Fi Speed Test application that checks both the download rate and the link speed.
Direct line of site (20 cm from Modem Router) 2.4Ghz
Download 59.67 Mbit/s (Link Speed 144Mpbs)
Upload 69.07 Mbit/s (Link Speed 132Mpbs)
Behind one wall (12 metres from Modem Router) 2.4Ghz
Download 26.12Mbit/s (Link Speed 78Mpbs)
Upload 52.24Mbit/s (Link Speed 78Mpbs)
Direct line of site (20 cm from Modem Router) 5Ghz
Download 103.97 Mbit/s (Link Speed 351Mps)
Upload 104.33 Mbit/s (Link Speed 175Mps)
Behind one wall (12 metres from Modem Router) 5Ghz
Download 96.96Mbit/s (Link Speed 117Mps)
Upload 82.96Mbit/s (Link Speed 117Mps)
With a base speed in my office of around 100 Mbit/s with direct line of site and then the other side of the house with one wall, the speed only dropped slightly on the 5Ghz band. This drop was more noticeable on the 2.4Ghz band but considering the distance and speed, it was still quite acceptable.