The UD-3900 includes a three-foot USB 3.0 host cable with USB-A and USB-C connectivity. Plugable's replacement guidance describes longer cables up to six feet overall and advises against exceeding that length because of possible performance problems. A longer desk layout should be planned around that connection limit.

The article offers examples reported by customers but does not guarantee third-party cable performance. Preserve the required USB data capability rather than selecting a charging cable with similar ends. Test the complete dock, including displays and peripherals, after changing a host cable that carries all of its computer communication.