The Retractable CAT6 RJ11/RJ45 Combo allows you to connect your laptop to CAT 6 high-speed RJ45 (LAN) connections or standard RJ11 (phone) connections. This patented, high-performance cable supports network speeds up to 1000 mbps. An ample 6 foot cords retracts neatly into a portable housing, making it the perfect, space-saving companion.