For a chassis having a port mounted on a side of the chassis and connected to electronics in the chassis, with a plug mated in the port and a cable connected to the plug, first and second supports are mounted on the chassis side on opposing sides of the port, where each support has a respective, predetermined length extending away from the chassis side. A strap defines a slot beginning at a first end of the strap and extending along a portion of the strap's length. The strap is placed with the cable inserted in the slot and the plug at a central portion of the strap. With the supports mounted on the chassis side on opposing sides of the port, the strap connected to the respective supports, at least the plug forces curvature in a central portion of the strap, so that the central portion of the strap clamps the plug.