USB adapter TP-LINK TL-WN722N shows higher speed (60 Mbit\s) than Intel Centrino Wireless-N 2200 PCIE for Desktop (40 Mbit\s).
On the same PC.
Router: TP-LINK TL-WR941ND
Settings on router: DD-WRT, 40Mhz, N-Only, Auto-channel
Signel quality in both cases is near 50%
I have tried all settings for Intel adapter in Device Manager
Is the reason only in coincidence of the router and adapter manufacturer (TP-LINK)?
Upload is very low.
If the 60 Mbps is for each of two MIMO channels the result will never be 300 Mbps, I think.
But in other utility speed is higher:
I am sorry for this issue.
While an internet speed test is not exactly a proper throughput test we can recommend latest driver version 16.7 and the recommended adapter and security settings for 802.11n.
http://www.intel.com/support/wireless/wtech/proset-ws/sb/CS-034041.htm Intel� PROSet/Wireless Software; Intel� PROSet/ Wireless Software Downloads
http://www.intel.com/support/wireless/wlan/4965agn/sb/CS-028449.htm Wireless Networking; How do I improve my 802.11n wireless performance?