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Mô tả tổng quan Switch Huawei S5720-28X-LI-24S-DC SFP 4 10 Gig SFP+ DC -48V

S5720-28X-LI-24S-DC Specification
Memory (RAM)	512 MB
Flash	240 MB
Mean time between failures (MTBF)	41 years
Mean time to repair (MTTR)	2 hours
Availability	> 0.99999
Service port surge protection	Common mode: ±7 kV
Power supply surge protection	±1 kV in differential mode, ±2 kV in common mode
Dimensions (W x D x H)	442.0 mm x 220.0 mm x 43.6 mm (17.4 in. x 8.7 in. x 1.72 in.)
Weight (including packaging materials)	3.3 kg (7.28 lb)
Stack ports	GE SFP optical ports except combo ports and 10GE SFP+ optical ports
RTC	Not supported
RPS	Supported
PoE	Not supported
Rated voltage range	-48 V DC to -60 V DC
Maximum voltage range	-36 V DC to -72 V DC
Maximum power consumption (100% throughput, full speed of fans)	42.7 W
Typical power consumption (30% of traffic load) Tested according to ATIS standard EEE enabled No PoE power consumption	30.3 W
Storage temperature	-40°C to +70°C (-40°F to +158°F)
Noise under normal temperature (27°C, sound power)	less than 43 dBA
Relative humidity	5% to 95%, noncondensing
Operating altitude	0-5000 m (0-16404 ft.)