Huawei S1700 Series Manual page 108

S1700 Managed Series Ethernet Switches
Product Description
Indicators
The indicator description for S1720-28GWR-PWR-4P is the same as that for
S1720-28GWR-PWR-4X. For details, see the indicator description for
S1720-28GWR-PWR-4X.
Power Supply Configuration
The S1720-28GWR-PWR-4P has a built-in power module and does not support
pluggable power modules. The built-in power module can provide 370 W PoE
power, which ensures full PoE power on 24 ports in compliance with 802.3af or on
12 ports in compliance with 802.3at.
Heat Dissipation
The S1720-28GWR-PWR-4P has two built-in fans for forced air cooling. The
airflow direction is left-to-right.
Technical Specifications
Table 5-23
Table 5-23 Technical specifications
Item
Memory (RAM)
Flash
Mean time
between failures
(MTBF)
Mean time to
repair (MTTR)
Availability
Service port
surge protection
Power supply
surge protection
Dimensions (H x
W x D)
Weight
(including
packaging)
Stack ports
RTC
Issue 18 (2020-10-23)
lists technical specifications of the S1720-28GWR-PWR-4P.
Description
512 MB
512 MB in total, 240 MB available for customers
41 years
2 hours
> 0.99999
Common mode: ±7 kV
±6 kV in differential mode, ±6 kV in common mode
43.6 mm x 442.0 mm x 310.0 mm (1.72 in. x 17.4 in. x 12.2
in.)
5.2 kg (11.45 lb)
Not supported
Not supported
Copyright © Huawei Technologies Co., Ltd.
5 Hardware Structure
74