Everyone, thanks for your answers.
I'm not using a hub, and I tried switching USB ports. That didn't work. What did work was using the cable that came in the box with the phone. The additional cables I bought from Verizon don't work. Without installing anything, but using the cable that came in the box, I plugged the phone into a different Win 7 64 bit laptop, and the computer immediately recognized the device and installed the drivers. Although the cables I bought say "data cables," apparently they're only chargers. Oh, well...
I never would have thunk it, especially since the Verizon cable is advertised as a "data" cable. And, just to wrap up all the loose ends, I took the cable that came in the box and connected the phone to the original computer that would not recognize the USB device, and guess what??!!?? Just like with my home laptop, the phone was instantly recognized, drivers were installed, and everything worked just fine.
So I have a new question: has anyone had success connecting the phone to a Win 7 64 bit laptop using anything other than the cable that came in the box?
Everyone, thanks for your help!
Yes. I used a longer cable I got from Amazon and it worked fine.
Well, maybe not as fine as I thought. I have a battery app that was always reporting a 99% charge. After your post, just for grins, I connected the cable I got with the phone and the app then reported 100% charge.
So it's an interesting question - how can you assess a micro USB before you buy it?
Had the exact same problem, used the verizon cable from my Droid x, charge only, no usb support, device not recognized, hair pulled for two days..... changed cable, solution, What is the difference? How can you tell Never had an issue like this with cables that fit and look the same.... Thanks for the help.
The cord may be your problem, but is definitely NOT my problem. I believe it is a Windows 7 problem.
Nothing at all happens now when I plug two different factory Motorola (from the box, original Droid and Droid Razr) cords into my 64 bit Windows 7 Home Professional laptop.
Tethering and USB storage used to work fine and reliably on this laptop with these cords.
Then it became intermittent.
Then it stopped, not unrecognized, just NOTHING, no bonk, no recognition that anything was plugged in.
Here's the kicker. This machine can dual boot Vista on another partition.
When I boot into Vista on this SAME machine and SAME cables, everything works fine, tethering, USB, all.
Then, I rebooted Windows 7 and same thing. Instantly recognized all working fine.