problem installing installing usb wifi adapter TP-LINK_TL-WN723N_v3

I have usb wifi adapter.
The output of my uname -a is
Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l GNU/Linux
I build the software from source which can be found in as given in the page.
I have plugged the BBB to pc using usb, no external adapter is used.
How do i know that the usb driver is accepted or not ? I ran the command “lshw -C network” it gave me bus error.
When i plug into my windows machine the green led blinks but here none. I am given to assume that the usb adapter is not even getting powered.
Or should i try powering the BBB using an external 5v adapter ?

Adapter works when powered using external 5v adapter.