Huawei S5700 Series Hardware Description page 112

S5700 Series Ethernet Switches
Hardware Description
Figure 3-11 Power supply by a built-in AC PoE power module
Motherboard
L: live wire N: neutral wire PGND: protection
Heat Dissipation
The S5700-28P-PWR-LI-AC has built-in fans for forced air cooling. The airflow direction is
left-to-right.
Technical Specifications
Table 3-29
Table 3-29 Technical specifications
Item
Memory (RAM)
Flash
Mean time between
failures (MTBF)
Mean time to repair
(MTTR)
Issue 24 (2016-08-12)
-53V RTN
PWR
ground
PWR
RPS
SYS
STAT
SPED
STCK
MODE
NOTE
This figure only shows the airflow direction and does not depict the actual device.
lists specifications of the S5700-28P-PWR-LI-AC.
Description
256 MB
l V200R001: 64 MB
l V200R002 and later versions: 200 MB
44.24 years
2 hours
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Copyright © Huawei Technologies Co., Ltd.
12V GND
L N PGND
GND: 12 V reference
ground
4
3
2
1
Cold air
Hot air
3 Chassis
RTN: -53 V reference
ground
98