Huawei CE5855-48T4S2Q-EI Switch(48-Port GE RJ45,4-Port 10G SFP+,2-Port 40G QSFP+,Without Fan and Power Module).

Model	CE5855-48T4S2Q-EI
Relative humidity	5% RH to 95% RH, noncondensing
Altitude	< 5000 m (16404 ft.)
Power source type	AC/DC
AC power input	Rated input voltage range: 100 V AC to 240 V AC, 50/60 Hz
DC power input	Rated voltage range: -48 V DC to -60 V DC
High-voltage DC power input	Not supported
Maximum power consumption	103 W
Typical power consumption	76 W (100% throughput, 3 m Ethernet cables on 48 ports and SFP+ cables on 4 ports and QSFP+ cables on 2 ports, double power modules)
Maximum heat dissipation	351 BTU/hr
Typical heat dissipation	259 BTU/hr (100% throughput, 3 m Ethernet cables on 48 ports and SFP+ cables on 4 ports and QSFP+ cables on 2 ports, double power modules)
Airflow	Front-to-back or back-to-front, depending on the fan modules and power modules
Power module backup	1+1 backup
Fan module backup	1+1 backup not supported