Easy to install Security Bracket Kit provides a simple method to lock an Ergotron device-management cart to the floor or wall for extra security when needed.Security Bracket Kit is compatible with Tablet Management Carts*, PowerShuttle Laptop Carts and PowerShuttle Tablet CartsEasy to mount Wall/Floor bracket folds flat when not in useAttach Cart bracket to Wall/Floor bracket directly using Master lock, or use steel security cable for additional flexibility and movement optionsMaster Lock has resettable combination so user can set personal 4-digit code