Rear Panel; S3952P-Ei Ethernet Switch; Front Panel; Figure 1-14 Rear Panel Of The S3928P-Pwr-Ei - Huawei Quidway S3900 Series Installation Manual

Installation Manual
Quidway S3900 Series Ethernet Switches

1.8.2 Rear Panel

The S3928P-PWR-EI has an AC-input power socket, a DC power socket and a
grounding screw on its rear panel, as shown in Figure 1-14:
(1) AC power socket

Figure 1-14 Rear panel of the S3928P-PWR-EI

AC-input ranges:
Rated voltage: 100 to 240 VAC; 50 to 60 Hz
Max. tolerance: 90 to 264 VAC; 50 to 60 Hz
DC-input ranges:
Voltage: -53 to -55 VDC
Note:
The S3928P-PWR-EI/S3952P-PWR-EI can only use PoE external power supply
recommended by Huawei-3Com as the DC-input, otherwise, the device can be
damaged.

1.9 S3952P-EI Ethernet Switch

1.9.1 Front Panel

I. Schematic diagram
On its
10Base-T/100Base-TX Ethernet ports, four 1000 Mbps SFP ports and one Console
port, as shown in Figure 1-15.
（1） （1）
(2) DC power socket
front panel the S3952P-EI
Huawei Technologies Proprietary
（2） （2）
provides
1-33
Chapter 1 Product Overview
（3） （3）
(3) Grounding screw
48 fixed auto-negotiation