faster wifi adapter

I think it helps computers/laptop connect to wifi more stable and faster? was a gift when i got my PC This is a TP-Link Archer T3U AC1300 Mini Wireless MU-MIMO USB Adapter. It supports Wi-Fi signals on both 2.4 GHz and 5 GHz bands. The adapter is USB 3.0 compatible and boasts speeds of 867 Mbps on 5 GHz and 400 Mbps on 2.4 GHz.