7 Ground screw
NOTE
The ground cable is not delivered with
the switch.
8 Jack reserved for AC power cable
locking strap
NOTE
The AC power cable locking strap is not
delivered with the switch.
9 AC power socket
NOTE
It is used with an AC power cable.
- -
Indicators
The indicator description for S1720-28GFR-4TP is the same as that for
S1720-20GFR-4TP. For details, see the indicator description for S1720-20GFR-4TP.
Power Supply Conguration
The S1720-28GFR-4TP has a built-in power module and does not support
pluggable power modules.
Heat Dissipation
The S1720-28GFR-4TP has no fans and uses natural heat dissipation.
Technical
Specications
Table 5-13 lists technical specications of the S1720-28GFR-4TP.
Table 5-13 Technical specications
Item Description
Memory (RAM) 256 MB
Flash 200 MB
Mean time
between failures
(MTBF)
65.66 years
Mean time to
repair (MTTR)
2 hours
Availability > 0.99999
Service port
surge protection
Common mode: ±6 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. 43
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