Plug and play, supports hot swap, no configuration required. Thickened all-metal shell material is fully shielded to prevent damage and enhance protection. Gold fingers adopt immersion gold process, reliable contact, strong and wear-, high plug-in times. Adopts distributed ventilation convection heat dissipation, cold and heat , can be stable and long-term operation in harsh environments of -20℃-60℃. Applicable to optical network switches, fiber optic network routers, network firewalls, fiber optic network cards, server network storage devices, fiber optic transceivers, etc. Output connector:10G single-mode dual-fiber LC Installation method:plug-in Wavelength:1310nm The product appearance and printed words depending on the batch, but this does not affect use. Type:20KM Colour:Silver Material:Metal Package Contents: 2 * Optical Fiber Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.