1. High Quality, 2 years quality guarantee 2. An RJ45 ports and a single-fiber SC optical port , to achieve optical signal conversion between 10/100base TX twisted pair (Ethernet )and 100base FX (fiber optic) ; 3. Core optical fiber can be completed in just one way signal transmission compared to dual fiber optic data transmission mode to improve the quantity doubled ; 4. Compliance with IEEE802.3 10Base-T and IEEE802.3u 100Base-TX, 100Base-FX standards ; 5. Has 10M/100M adaptive capacity ; 6. Ethernet interface can adaptively direct line / crossover cable connection ; 7. Support full / half duplex mode ; 8. Support IEEE802.3X duplex flow control and half-duplex backpressure flow control ; 9. Supports broadcast storm prevention function ; 10. 1916 Byte support large data frame ( optional ) ;   12. UTP up to 100 meters ; longest 100 km single-mode fiber ; 13. There are six LED indicators : Power, TX 100, TX Link / Act, FX 100, FX Link / Act, FDX / Col; easy to monitor the working status of the transceiver and determine the cause of the fault ; 14. There are external , internal power supply of two types : AC100 ~ 265V / DC5V switching power supply ; 15. Working temperature : 0 ~ 50 degree; 16. Storage temperature : - 40 ~ 70 degree ; 17. Transceiver Dimensions: External power 70 × 26 × 93mm; built-in 120 × 30 × 140mm. 18. outer Dimensions: 95mm × 71mm × 25mm 19. Package: ESD package,Carton