The HUAWEI eKit MODULE SFP-GE-SX-MM850 (MPN 02315HNY) is an SFP Gigabit Ethernet optical transceiver for multimode fiber. It operates at a wavelength of 850 nm, supports distances of up to approximately 0.55 km (550 m), and uses an LC duplex connector. It is supplied as a standalone unit in eKit packaging and is compatible with standard SFP ports in switches and other networking devices.