Customized Service-Fibay supports regular custom service for your options. such as different compatibilities, different SFP connectors, cable length, cable color, label details and etc. welcome your needs. we provides innovative and cost-effective 1G 10G 25G 40G 100G 200G 400G Fiber Optical Networking Transceiver Modules. Easy to install-It supports real-time configuration, plug and play, hot pluggable sfp footprint. It doesn't require any setup or installation for either device. It greens up immediately and connects right away. 5 Warranty-We totally obey warranty for 30-Days Free-returned or Exchange, 5-Years long period for Free-maintenance. and if you have any technical problems, E-mail ME for 24Hours online after-sale service. 1G SFP SX-1000BASE-SX 1.25Gbps SFP Mini-GBIC, multi-mode, mm, 850nm, 550m@MMF, full duplex LC Hot pluggle, auto-negotiation, low power consumption, operation temperature range for 0 to 70°C (23 to 158°F). Support DDM , MSA compliant. 100% Compatible-for Fortinet Networks Brand Gigabit Ethernet 1000BASE-SX standards, EEPROM data coding and writing to Fortinet FN-TRAN-SX FG-TRAN-SX FR-TRAN-SX.