I have bought Archer 3tU today to use on an inspiron 3470 - The download speed its fine but upload no. I have plugged it on my other device ( Surface) and compare with the native board. With the surface adapter i got 150 Mb/s upload but with archer ( not difference change the ecive plugged in) maximum 7-10Mb/s. I dont know how to fix it. All my home devices get 140-150 MB/s upload rate.

I'm usindo Deco m5 system Contracted rates: 300/150 Mb/s.

Any help?