Huawei S1700 Series Manual page 149

S1700 Managed Series Ethernet Switches
Product Description
7
9
Indicators
The indicator description for S1720-28GWR-PWR-4TP 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-4TP has a built-in power module and does not support
pluggable power modules. The built-in power module can provide 124 W PoE
power, which ensures full PoE power on 8 ports in compliance with 802.3af or on
4 ports in compliance with 802.3at.
Heat Dissipation
The S1720-28GWR-PWR-4TP has no fans and uses natural heat dissipation.
Technical Specifications
Table 5-34
Table 5-34 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
Issue 18 (2020-10-23)
AC power socket
NOTE
It is used with an AC power cable.
Ground screw
lists technical specifications of the S1720-28GWR-PWR-4TP.
Description
512 MB
512 MB in total, 240 MB available for customers
42 years
2 hours
> 0.99999
Common mode: ±7 kV
±6 kV in differential mode, ±6 kV in common mode
Copyright © Huawei Technologies Co., Ltd.
8 Jack reserved for AC power cable
locking strap
NOTE
The AC power cable locking strap is not
delivered with the switch.
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5 Hardware Structure
115