5 Ground screw
NOTE
The ground cable is not delivered with
the switch.
6 Jack reserved for AC power cable
locking strap
NOTE
The AC power cable locking strap is not
delivered with the switch.
7 AC power socket
NOTE
It is used with an AC power cable.
- -
Indicators
The S1720-28GWR-4X does not have the PoE indicator. The meanings of other
indicators are the same as those on the S1720-28GWR-PWR-4X.
Power Supply Conguration
The S1720-28GWR-4X has a built-in power module and does not support
pluggable power modules.
Heat Dissipation
The S1720-28GWR-4X has no fans and uses natural heat dissipation.
Technical
Specications
Table 5-22 lists technical specications of the S1720-28GWR-4X.
Table 5-22 Technical specications
Item Description
Memory (RAM) 512 MB
Flash 512 MB in total, 240 MB available for customers
Mean time
between failures
(MTBF)
45 years
Mean time to
repair (MTTR)
2 hours
Availability > 0.99999
Service port
surge protection
Common mode: ±7 kV
Power supply
surge protection
±6 kV in dierential mode, ±6 kV in common mode
S1700 Managed Series Ethernet Switches
Product Description
5 Hardware Structure
Issue 18 (2020-10-23) Copyright © Huawei Technologies Co., Ltd. 70
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