FLYPROFiber provides 5 years free warranty and lifetime technical support, you can contact us by email at any time for troubleshooting and solution customization. Wide Compatibility - Each sfp to sfp cable is tested before shipping to essure it can be compatible with wide brand devices including Cisco/Meraki, Ubiquiti, MikroTik, Netgear, D-Link, Supermicro, TP-Link, Broadcom, Linksys, Intel, IBM, Zyxel and other open brand switches, gigabit router, 10gb NAS storage server, NIC, media convertor or other ethernet card and adapter with SFP+ ports. Cost Saving and Improvement - A SFP DAC Cable is equal to 2*10G sfp+ optical modules plus an optical fiber patch cord, helping save your budget in short reach environment and improve the stability and durability without interface exposed and repeated plug and removal. Features - SFP+ to SFP+ DAC Twinax Cable, 4Meter(13ft) = 1*Twinax Cable + 2*SFP+ Connectors, Passive, AWG24. Come with Dust Cover on Each End, and Anti-static Packaging. Only for 10Gbps data rate!Please note that does not support 1000Mbps, 2.5Gbps, 5Gbps - Compatible for Cisco SFP-H10GB-CU50CM SFP Cable, Operating temperature 0 to 70°C (32 to 158°F). Minimum Bend Radius: 20mm, Jacket Material: PVC(OFNR).