... rate testFiber wavelengthMulti-mode 850nm, signal-mode 1310nm Electricity port transmissionRS-232 port 15MOptic port transmission Multi-mode 2KM, signal-mode 20,40 ... 600W surge protection, 15KV static protectionElectricity port connectorDB-9 femaleOptic port connectorMulti-mode adopt ST/SC connector, signal-mode adopt FC/ST/SC ...