This is a locking vehicle dock that is designed to be used with the RAM-GDS-SKIN-SAM16U :: RAM IntelliSkin With GDS Technology For The Samsung Galaxy Tab A 8.0. 

It is a spring loaded, quick release cradle with a keyed lock, and the integrated GDS Technology™ platform enables data and charging capabilities to the mounted tablet. So you can easily insert and remove your tablet, and keep it charged, without needing to remove the IntelliSkin cover.

• Max power 5V-12V @ 2A*
• RAM® is setting a new standard by creating a uniform platform for making connection between any electronic device and a dock for power and data communication.
• This provides compatibility across multiple devices, making power and data communication simple and cost effective.
• Any RAM IntelliSkin™ can dock in a GDS® Dock. 
• Connect to High Definition Video through a Slimport, MHL, or device specific HD video adapter.
• Enhance your device by connection to Ethernet via USB.
• Project your device’s audio to an external speaker system or recording device seamlessly, and without directly plugging any cables into your device.
• Material: High Strength Composite

Note: The "U" in the part number reflects product packaged in poly bag. Included is a set of four nuts and bolts to connect the cradle to any RAM components or mounts that contain the universal AMPs hole pattern. Micro USB 2.0 cable included with purchase.

* mUSB products supporting USB 2.0/3.0 will have a max current of 1.5A