The CISCO GLC-SX-MMD 1000BASE-SX MMD SFP MMF 850nm Transceiver is a brand new and sealed product from Cisco, designed for Cisco compatibility. This unit offers a maximum data rate of 1000 Mbps/1 Gbps, making it suitable for high-speed networking needs. Manufactured in Malaysia, it comes with a lifetime manufacturer warranty and is a reliable choice for enterprise networking setups. With its SFP network ports and specific product line (SX MMD), this transceiver provides a dependable solution for efficient data transmission.