Zyxel SFP-LX-10-D. Maximum data transfer rate: 1000 Mbit/s, Interface type: SFP, Fiber optic connector: LC. Input voltage: 3.15 V, Maximum voltage: 3.45 V. Safety: Class 1 Laser, 21 CFR 1040.10, 1040.11, CSA, TUV. Width: 2.2" (56 mm), Depth: 0.528" (13.4 mm), Height: 0.491" (12.5 mm)