V-Series Panels | User Guide (draft, not yet released)Page 29Desktop with Lower Bracket FittedFigure 4-5: Desktop casing (with lower bracket attached)8) Hang the panel on the upper wall bracket and mark the position of thescrew hole for the lower bracket on the wall. Remove the panel andplace a suitable fixing for the lower wall bracket.9) Replace the panel on the upper bracket and attach the lower wallbracket to the fixing. Attach the cables to the connectors and power thepanel up.4.1.3 Placing expansion panelsThe following section describes how to install the following optional, accessorykey panels: The V12LDE Lever Key Expansion Panel adds 12 lever key talk/listenselectors to a panel. The V12PDE Pushbutton Expansion Panel adds 12 pushbuttontalk/listen selectors to a panel. The V12RDE Rotary Expansion Panel adds 12 rotary talk/listenselectors to a panel. The V16LDE Lever Key Expansion Panel adds 16 lever key talk/listenselectors to a panel.The installation procedure is identical for these panels.