Amer Networks MRM-GT/GSXSC. Converter input interface: 1000Base-T, Converter output interface: 1000Base-SX. Fiber optic connector: SC. Maximum transfer distance: 21653.5" (550 m), Fiber mode structure: Multi-mode. Certification: FCC, CE. Dimensions (WxDxH): 0.984 x 4.72 x 3.46" (25 x 120 x 88 mm)