Get to work on your Microsoft Surface Pro 3, Surface Pro 4, Surface Pro 5, Surface Pro 6 or Surface Book with this Microsoft PD9-00003 Surface Dock, which features USB 3.0, Gigabit Ethernet, 3.5mm audio and Mini DisplayPort interfaces, so you can connect a host of accessories and charge your device while you use it.
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Bought 2 of these Docks (which were "version 1") as soon as Microsoft made them available for purchase. Both Docks were dropping the network and all USB connections - like those items were all unplugged at once and then plugged right back in all at once - this would take place in intervals of between 5 and 20 minutes all day long. "Version 2" of these Docks work great - no issues. Version 1 dock has a white led light on the spine of the connector when plugged into the Surface Pro 3 or 4. "Version 2" of this dock had a larger connector and the white led light is on one of the flat sides of the connector.