Specifications: 1) Complies with IEEE802.3 and IEEE802.3u 2) 19 rack mount, 2U high 3) 16 slots for media converter modules 4) Available modules: SM, MM and Bi-direction 5) Hot-pluggable 6) Diagnostic LED: power LED 7) Input voltage: AC 180-240V, DC -48V 8) Internal back-up power supply 9) Output voltage: DC 5V 10) Output power: 30W max. 11) Operation temperature: 0 ~ 60°C 12) Storage temperature: -10 ~ +70°C 13) Humidity: 5 - 95% (Non-condensing) 14) Remark: We can also provide 2U rack mount chassis with SNMP and 3U rack Mount chassis