Huawei S5700 Series Hardware Description

Table 3-81 Power supply configurations
Power
Supply
Configuratio
n
Available PoE
Power
Maximum Number of Ports (Fully Loaded)
No RPS used 369.6 W
l 802.3af (15.4 W per port): 24
l 802.3at (30 W per port): 12
RPS used 800 W
l 802.3af (15.4 W per port): 24
l 802.3at (30 W per port): 24
Figure 3-31 shows the power supply mode of a built-in AC PoE power module (PWR). The
PWR module receives AC power from an external power source and provides two outputs: 12
V and -53 V. The 12 V output is provided for the chassis, and the -53 V output is provided for
PDs.
Figure 3-31 Power supply by a built-in AC PoE power module
Motherboard
GND
12V
PWR
L N PGND
-53V RTN
L: live wire N: neutral wire PGND: protection
ground
GND: 12 V reference
ground
RTN: -53 V reference
ground
Heat Dissipation
The S5700-28X-PWR-LI-AC has built-in fans for forced air cooling. The airflow direction is
left-to-right.
1
2
3
4
MODE
STCK
SPED
STAT
SYS
RPS
PWR
Cold air
Hot air
NOTE
This figure only shows the airflow direction and does not depict the actual device.
S5700 Series Ethernet Switches
Hardware Description
3 Chassis
Issue 24 (2016-08-12) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
157

Huawei S5700 Series Specifications

General

Model	S5700 Series
Category	Switch
Power Supply	AC or DC
Fixed GE Ports	24/48 (depending on model)
PoE	Available on some models
Routing Protocols	RIP, OSPF, BGP, IS-IS
Management	SNMP, RMON, Web-based, CLI
Operating Temperature	0°C to 45°C
VLAN	4094
Dimensions (W x D x H)	442.0 mm x 220.0 mm x 43.6 mm