ADD-MPOMPO-3M9SMS is a 3m Single-Mode fiber (SMF) Female to Female MPO/MPO OS1 Straight Yellow Patch Cable. Straight-through cables are typically used for interconnection of patch panels, and are commonly referred to as Key Up/Key Up or Key Down/Key Down configuration. This high-density 9/125 cable accomodates 12 fibers (6 duplex circuits), providing savings in circuit card and rack space. In addition, it accomodates speeds up to 40 gigabits, commonly used in QSFP applications. This patch cable is recommended for connections between fiber patch panels, hubs, switches, media converters and routers, etc. Addoncomputer.com Patch Cables are 100% compliant for all of our networking needs. They provide higher speeds and increased bandwidth, compared to conventional twisted-pair copper cable. Each cable is 100% optically tested for insertion loss before you take ownership. Now you have a cost effective solution to your network upgrade needs.