Yeah you're right, the plug is one of the pluses for the OEM dock. The original droid one I had didn't even have that though. My Droid X one did, but I didn't use it in the car that often anyway.

Let us know how the aftermarket one works if you get it!

Yeah that's not too bad. What I like about the Motorola OEM dock is that it mounts into usb automatically and the usb cord itself has an adapter to plug a 3.5mm auxilary jack right in, so you can just mount it in the dock and everything is good to go. That is a nice dock though, I might settle with it for now and just hope that Motorola eventually comes out with an electrify m dock.

Thanks for your help!

Since the physical size of the Electrify M & Razr M are different I wouldn't risk it. The Electrify is a tiny bit bigger all around. I can't find a specific dock for the phone.

At this point after owning several phone specific docks myself, I'm about to just get something like this:
Amazon.com: iOttie One-Touch Windshield Dashboard Car Mount Holder for iPhone 5 4S 4 3GS Samsung Galaxy S3 S2 Epic Touch 4G HTC OneX EVO 4G Rhyme DROID RAZR BIONIC INCREDIBLE 2 CHARGE Google Nexus BlackBerry Torch LG Revolution GPS Compact Size 360 d

Does anyone know of a navigation dock similar to the droid razr m dock that you can use for the electrify m. I know the droid razr m and the electrify m are nearly identical and was wondering if I could just use that instead but I dont want to purchase it until I can find out for sure.

Thanks in advance!