I just received a DWA-110 today, I cracked it open to take a look at the PCB since I heard rumors from this forum post here that there may be the possibility of adding a pigtail to this adapter and attaching an external antenna.
They say its a U.fl RF connector, if it is, then it's either A) Missing the middle pin or B) Female or it's not a U.fl connector at all.
I was hoping to get some insight on this and will tag further posts with 'dwa110' with updates on this particular investigation.