High-Speed HDMI 4K Cable Retractor with PT-3H2 Signal ExtenderKRT−4 is a cable retractor designed for installing in a meeting room classroom or other AV site. KRT−4 extends a variety of common AV connector types and is easy to install and use.• Provides Convenient and Easy–to–Use Connecting — Pull the cable to extend up to 1.8m (5.9ft) from the installation site; the cable automatically locks in position to the desired length. When finished pull the cable again and it retracts into the housing.• Improved Design — Gentle retraction feature extends the life of the cable and connector.• Simple and Flexible Installation Options — Install in compatible Kramer TBUS models or attach directly to the underside of a table with a few screws.• Available in Most Common AV Connector Types — HDMI VGA audio (3.5mm) LAN USB and DisplayPort.FeaturesTypeHDMI Cables Male to Female ColourBlack