The adapter plate allows for easy one person field installation when adding peripherals to your material handling solution. The 75MM Holes to Stud Adapter Plate attaches to dock and allows the installer to add additional mounts such as keyboard mounts and scanner mounts to the backside before attaching to the guard leg or overhead guard mounts. Availability, Lead Times and Shipping Please note that ALL Gamber-Johnson and Havis mounting and docking equipment typically takes at least a week to ship. Lead times can often be 3-6+ weeks or longer depending on the exact items purchased. The following is guidance only and changes frequently. Basic mounting hardware such as plates or poles: 1-2 weeks to ship Vehicle-specific kits or more complex mounting solutions: 2-4 weeks to ship Powered docking stations with port replication: 4-8+ weeks to ship. Please call, email, or chat with us to discuss lead times as it specifically relates to your needs. Expedited shipping methods selected at checkout do not speed up lead times but rather reduce transit time when an order ships.