ummm...what?
I feel as though this is asking if there is a belt clip that goes into the microUSB port. Perhaps to facilitate charging through a static charge generated by the kinetic energy of walking, specifically with Corduroy pants. vip voop vip voop.
I think there are belt clips.
I know the the Droid uses MicroUSB.
I doubt there will ever be a belt clip that charges your phone via your pants.
The charger port on the Droid is definitely a MicroUSB. I went to my local computer supply shop and picked up a MicroUSB-USB cord so I could use my cigarette plug charger on it. Love those stores, I pity anyone who buys HDMI and other data cables from Best Buy or other "big box" stores.
As for a belt clip, a company called Seidio makes some. They' sponsor this forum as well, I think. Here's a link to one on Amazon. I've heard good things about all that Seidio makes, but I have never used one of their products.