The GDS® Uni-Conn™ Adapter for Zebra ET401 & ET4x 10" Tablet (RAM-GDS-U1-ZE21U) is designed to make the Zebra ET4x and ET401 10" tablet compatible with the revolutionary GDS® Uni-Conn™ docking platform. Easily install the adapter by replacing the OEM backing plate. The Uni-Conn™ docking platform makes it so when the time comes to upgrade devices in your fleet, a new device and adapter plate is all that's needed. This adapter is backed by a lifetime warranty. One Dock to Connect Them All™.