Huawei AR500 Series Hardware Description page 180

Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
5
7
9
11 SIM card slot
Indicator Description
Figure 3-23
Issue 10 (2019-03-06)
RS232 interface
USB interface
Power socket
NOTE
l The router supports Huawei
Industrial AC Power Module
W Integrated Power Adapter with an
Adapter Cable.
l GND is the ground for power signal
isolation.
NOTE
l The router must use industrial SIM cards.
l The router supports double-card single-
standby, and SIM1 is the default primary
card.
l If only one SIM card needs to be
installed, install it in slot SIM1.
shows the indicators on the AR502G-L-D-H router.
Copyright © Huawei Technologies Co., Ltd.
6 WAN interface: GE electrical interface
NOTE
GE is a management interface and is used to
upgrade the router.
8 RS485/RS422 interface
NOTE
SG is the ground for RS485/RS422 signal
isolation.
10 CONFIG
NOTE
4.5 60 W This button is used to restore factory settings.
or 4.4 24
Push the button to power on the router and
hold down the button for at least 10 seconds
(until the ALM indicator turns red) to restore
the factory settings.
Restoring the factory settings will cause
service interruption. Exercise caution when
deciding to use this button.
12 DIP switch
NOTE
By default, the DIP switch is in RS485 state
and works in half-duplex mode, with pull-up
and pull-down resistance of 150 kohm and
without 120 ohm matched load resistance.
3 Chassis
169