YKW-JK204BS，YKW-JK208BS

■N*port 10/100M RJ-45
■2port 1000Base-Fx ,Single or multi mode.
■Store and forward mode
■10/100M auto-negotiation, maximum speed to 20/200M (full-duplex)
■Supports IEEE 802.3x full-duplex flow control and back pressure half-duplex flow control
■Supports MAC self-learning
■Automatic MDI/MDI-X configuration
■LED status of Link, activity, Full/half duplex, speed,and power on diagnostic function
■Steel case

Specification
■Standard: IEEE802.3、IEEE802.3u、IEEE802.3x
■Topology: Star
■Number of Ports: NPort 10/100Base-Tx And 2 Port 1000Base-Fx
■Transmission Rate 10Mbps: 14880pps，100Mbps：148800pps
■Switching mode: Store-and-Forward
■Flow control mode: IEEE 802.3x full-duplex flow control and back pressure flow control
■LED Indicator: LED status of Link, activity, Full/half duplex, speed, and power on diagnostic function
■Cable Support: 10Base-T： 3, 4 or Cat 5 shielded / unshielded twisted pair，100 meters max.；100Base-TX：Cat 5 shielded / unshielded twisted pair，100 meters max. 100Base-Fx：8.3μm、8.7μm、9μm and10μm on single mode fiber and 50、62.5 and 100μm on multi-mode fiber
■Power supply: AC:220V or DC:-48V
■Temperature Humidity
Operation:  Temperature (-20℃ to 70℃)  Humidity (10% to 90%)
Storage:  Temperature  (-40℃ to 75℃) Humidity (5% to 95% RH)