The A3L791v3.7-RTC Retractable CAT5e networking cable with RJ45 connectors can extend the operating distance of networking devices while traveling. It allows you to connect your notebook computer to a wall outlet, cable modem, DSL modem, router, hub, patch panel, or other network-enabled device so you can access high-speed networks and/or the Internet-anywhere you go. Its compact size and advanced functionality make it the ideal accessory to include inside your laptop case-a great solution for today's mobile professional. The flat cable design allows the Cable to wind inside the reel, eliminating messiness and tangling.