RAM® Double Socket Arm with 75x75mm VESA Plate - C Size Short Adapter The RAM RAM-109VS-4U consists of

The RAM RAM-109VS-4U consists of a single swing arm mount with 1

and 1" square rails

they allowing for your laptop to close completely while in the tray

The RAM-109V-4U consists of a 6" long curved swing arm with open socket and vertical surface mounting base

The VESA plate contains 75x75MM hole patterns

RAM® Double Socket Arm with 75x75mm VESA Plate - C Size Short Adapter The RAM RAM-109VS-4U consists ofThis RAM 103U B 2461 consists of a 1. 5" rubber ball, connected to a 3. 625" square plate with a 75mm X 75mm VESA hole pattern and SHORT length double socket arm. The rubber ball is positioned 0. 88" from the center of one edge. The double socket arm will attach to all RAM 1. 5" dia. ball bases.