The Cisco SFP+ 10-foot Twinaxial Cable is a proprietary cable that directly attaches from one machine to another. It is specifically designed to hook server racks together at short distances so that you may easily expand your data center. The maximum length is rated at 10 feet so that you may have server racks connected side by side. It is compatible with Catalyst 2960 systems and uses a SFP+ to SFP+ connection for a super high up-link speed.