Not all Micro-USB cables created equal?

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http://forums.androidcentral.com – Hey, I'm coming to a RAZR HD from an old Droid Pro and noticed that my Droid Pro's Micro USB charger doesn't charge the HD very well -- it acts like the cable isn't plugged in very well and switches between charging/not charging. If I compare the Pro's charger to the one for the RAZR I notice the RAZR's metal connector is just a tad bit longer, probably about 1mm. This makes sense because the phone's Micro USB port seems to sit back from the bezel by about 1mm more than "normal". The Pro's cable sits in the HD pretty loosely, so that's probably why it doesn't charge the phone that (HowTos)