It's tensile and because of making by excellent stall Small size, Users are greatly satisfied with its high reliability and performance in environment It also better holes to releat tempertureand the egipment resist temperture effectively and run stably. Gigabit SFP single-mode single fiber 1.25G transceiver Functions:Grade connection, converge Product Name:1000Mbps Mini SFP Media Converter Power supply:DC 5V1A RJ45 Port Rate:100 or 1000Mbps self adapting Fiber Optic Port Rate:1.25G Fiber Optic Interface:SFP RJ45 Interface:RJ45 Colour:Black Material:Metal Size:7.6x3.6x2.2cm Package Contents: 1 x transceiver 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.