Hello, 
I'm about to buy an adapter, My Wi-Fi has 100mbps speed, so I don't need anything promising more than 100mbps connection speed.

My problem is; I want to get a high signal over a little bit long distance to the router, so I need a strong antenna.

If the strengths of the antennas (in range) are both equal in T3 and T2, I want to buy T2 for economic reasons. 

I visited the Specification page of both T3U-Plus and T2U-Plus adapters, but T2's antenna strength isn't shared like T3's.
 
Please share the details of the T2U-Plus adapter's antenna details, so I can decide. 

Thanks.