Opening the box will bring a little bit of a shock; the TEW-645UB is enormous! As manufacturers are moving towards smaller components, TRENDNet has opted to move in the opposite direction with the 645UB.
In the picture below you can see that when put next to two different wireless adapters, the TRENDNet TEW-645UB towers above them.
Apparently realizing that most people would not want a 6"+ tube sticking out of the back of their PC or the side of their laptop, TRENDNet has included a base for the TEW-645UB. On the surface they state it is to allow you to get the best signal, but I have a feeling it is also to keep your PC/laptop from looking a tad bit silly.
Also included is an actual paper manual (many manufacturers are moving away from this and are putting all documentation on to CDs or DVDs) plus the CD-ROM with drivers.