Wifi adapter?


I bought TP-Link Archer T2Ub from Amazon to get wifi from their TL-WR850N router(2ghz only) in my room. But I'm getting like 1mbit/s while getting around 30-40 mbit/s on my smartphone. Can't use wires. Should I try buying something else? I also have an old Dlink Dr 615 though not sure if it works and don't have its adapter.
If you don't need Bluetooth, get this one (only 2.4GHz Wi-Fi supported) - https://www.amazon.in/TP-Link-TL-WN823N-300Mbps-Wireless-N-Adapter/dp/B0088TKTY2/

If you need Bluetooth, get it separately - https://www.amazon.in/TP-Link-Bluetooth-Receiver-UB500-Controllers/dp/B098K3H92Z/


If you're stuck with T2UB and can't return it, try getting this and repositioning T2UB and run speedtests each time, you'll see improved results.

This - https://www.amazon.in/100FIT-Extender-Extension-High-Speed-Compatible/dp/B0CW67MGR1/