DVI Over CAT5/UTP Extender 1600X1200 The 4xem DVI over Cat5 Extender is a solution that allows you to extend your DVI signal up to 50 meters (164 feet) over two Cat5 unshielded twisted pair (UTP) cables. This solution is ideal for applications where your DVI monitor needs to be placed further than the average 20 meter DVI cable limitation. Driving a DVI signal over Cat5 allows you to take advantage of your UTP cable infrastructure already installed for a cost-effective and reliable installation.