Kensington SafeDome™ Cable Lock for iMac® — Supervisor, Kensington, Key, Carbon steel, Steel, Black, Metallic Kensington SafeDome™ Cable Lock for iMac® — Supervisor. Product color: Black, Metallic, Best uses: Monitor, Lock type: Key. Width: 7" (177.8 mm), Depth: 3" (76.2 mm), Height: 8" (203.2 mm)