Although dockXtender isn’t an Apple-licensed accessory, it’s nicely built by unauthorized standards, and doesn’t give away that detail in any way besides the lack of a ring around the Lightning port. CableJive’s housings on both sides of the cable were obviously designed to last: each of the connectors is inside a tapered hard plastic jacket, built with bulging ridges that lead to reinforced cabling. Jackets on the cables and…