?5 Warranty? We totally obey warranty roles for 30-Days Free-returned or Exchange, 5-Years long period for Free-maintenance. and if you have any technical problems, E-mail us, 24Hours online for your after-sale service. ?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. ?1.25G SFP T? 1000BASE-T 1.25Gbps Gigabit Ethernet over Cat 5 cable, SFP-T Copper SFP to RJ45, 100 meters, Mini-GBIC, Hot pluggle, auto-negotiation, low power consumption, operation temperature range for 0 to 70°C (23 to 158°F). MSA compliant. ?Wide Compatible? for Open Sources Brands, including Ubiquiti UF-RJ45-1G, Netgear AGM734, Brocade E1MG-TX, Unifi, Finisar FCLF852XP2BTL, TP-link RJ45SFP-TPL and Dlink DEM-311GT, Zyxel SFP-1000T, Trendnet, Supermicro, ZTE, Linksys, Qnap Extreme etc. If your brand is in, you can have a try. ?Compatibility Assurance?100% Compatible for Cisco Brand Gigabit Ethernet 1000BASE-T standards, EEPROM data coding and writing as GLC-T, GLC-TE, SFP-GE-T, GLC-TA (1000M).