Hardware Overview 13Table 1-3 describes the LED status of a 40GbE QSFP+ port that is split intofour 10GbE SFP+ ports using a 4x10G breakout cable .InstallationSite PreparationBefore installing the switch or switches, make sure that the choseninstallation location meets the following site requirements:• Clearance — There is adequate front and rear clearance for operatoraccess. Allow clearance for cabling, power connections, and ventilation.• Cabling — The cabling is routed to avoid sources of electrical noise suchas radio transmitters, broadcast amplifiers, power lines, and fluorescentlighting fixtures.• Ambient Temperature — The ambient switch operating temperaturerange is 10° to 35ºC (50° to 95ºF).NOTE: Decrease the maximum temperature by 1°C (1.8°F) per 300 m (985 ft.)above 900 m (2955 ft.).• Relative Humidity — The operating relative humidity is 8% to 85%(non-condensing) with a maximum humidity gradation of 10% per hour.Ta b l e 1 - 3 . L E D S t a t u s o f a 4 0 G b E Q S F P + P o r t w i t h B r e a k o u tC a b l ePort LED Color MeaningLink StatusOff All four 10GbE ports on a breakout cable are down.Yellow At least one of the four 10GbE ports on a breakoutcable is up.ActivityOff No traffic is being transmitted on any 10GbE port onthe breakout cable.BlinkingGreenTraffic is being transmitted or received on at least oneof the 10GbE ports on the breakout cable.