I bought a brand new HP computer and it has the onboard wifi. I pay for and get 60Mbps bandwidth. On my old computer at same location using a PCI wifi card I connected the same as the downstairs PC that was connected via ethernet(60Mbps). Now I connect any given time half of that speed upstairs. So I disable new computers onboard wifi adapter and buy a USB one that says it is capable of 600 Mbps so that shouldn't be a problem. Now to make all things exact when testing there is no other devices connected when I do these speed tests. So just now upstairs I get a signal of 5 bars for signal strength and test is 25 Mbps. Downstairs is 62. Keep in mind my upstairs that connected with PCI card wifi got same results as ethernet. Is USB and onboard wireless adapters junk? I am using 2.4GHZ band and also n router and adapters. Any insight into this?