Huawei S5700 Series Hardware Description page 133

S5700 Series Ethernet Switches
Hardware Description
Figure 3-19 Power supply mode of a built-in AC power module
Motherboard
L: live wire
Heat Dissipation
The S5700-28TP-LI-AC has built-in fans for forced air cooling. The airflow direction is left-
to-right.
Technical Specifications
Table 3-50
Table 3-50 Technical specifications
Item
Memory (RAM)
Flash
Mean time between
failures (MTBF)
Mean time to repair
(MTTR)
Availability
Service port surge
protection
Issue 24 (2016-08-12)
PWR
N: neutral wire
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 S5700-28TP-LI-AC.
Description
256 MB
200 MB
65.66 years
2 hours
> 0.99999
Common mode: ±6 kV
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
12V GND
L N PGND
PGND: protection ground
4
3
2
1
Cold air
Hot air
GND: 12 V reference ground
3 Chassis
119