100% optically tested multimode 50/125 fiber optic loopback cables by Amphenol meet and exceed industry standard specifications for insertion loss, return loss, and endface geometry. Features tight buffered 50-micron fiber with precision terminated FC connectors for fiber optic. We supply SC FC multimode duplex fiber optic patch cables, these cables are with optional 50/125 multimode fiber or 62. 5/125 multimode fiber, the FC SC duplex multimode fiber patch cable can be 0. Fiber Patch Cords are used to connect optical network equipment, patch panels, and fiber distribution systems across data center, telecom, and enterprise environments.