To recalibrate your Horizontal Dock, simply hold down the two pressure sensors located on the dock tray with your fingers. The light ring on the dock should display a pulsating green light once the pressure sensors have been depressed. Touch the cycle button to start the docking process. Continue to hold the pressure sensors as the ports extend. Run this cycle 5 to 10 times and the dock should realign the ports on its own.
Once you have done this process a few times it is a good idea to power cycle your dock. To power cycle your dock, simply remove the power supply from the dock for 10 to 15 seconds.