NetEngine AR600, AR6100, AR6200, and AR6300 Hardware Description

AR651U-A4

AR651U-A4

Overview

Table 3-203 Basic information about the AR651U-A4
Item Details
Description AR651U-A4, 2*GE combo WAN, 8*GE LAN, 1*USB2.0, 1*HDD, 1*MIC slot
Part Number 50010484
Model AR651U-A4
First supported version V300R019C10
Remarks

AR651U-A4-L4EA (with 1LTE4-EA card; part number: 02351WGP): available in versions V300R003C00 to V300R019C00

AR651U-A4-L6EA (with 1LTE6-EA card; part number: 02351WGN): available in versions V300R003C00 to V300R019C00

AR651U-A4 (without LTE cards; part number: 50010484): available in V300R019C10 and later versions

Devices manufactured after March 31, 2021 support only V300R019C13 and later versions.

Appearance

Figure 3-109 Appearance of the AR651U-A4

Components

Figure 3-110 Components of the AR651U-A4

1. Product model silkscreen

2. One hard disk interface

NOTE:

SSD 2.5-inch hard drive is supported.

AR651U-A4: The SSD-Sata240G hard disk (BOM: 02312SEU) is recommended.

3. One USB 2.0 interface

4. Ground point

5. One MIC slot

NOTE:

The MIC card does not support hot swap.

  • AR651U-A4-L4EA: equipped with the 1LTE4-EA card.
  • If the 1LTE6-EA is configured, the device model is AR651U-A4-L6EA: equipped with the 1LTE6-EA card.

6. RESET button

NOTE:
This button is used to reset the router.
  • In an empty configuration scenario, ensure that the router has no console port input, and has no user login routers. If the Reset button is pressed and held for at least 5 seconds, you will access the registration query center of Huawei devices and obtain the cloud management platform address of routers for plug-and-play deployment.
  • In the configured scenario, hold down the button for at least 5 seconds to restore the factory settings.
  • To reset the router, hold down the button for less than 5 seconds.
Resetting the router will interrupt services. Exercise caution when deciding to press this button.

If needed, you can run the factory-configuration prohibit command in the system view to disable the function of restoring the factory settings by holding down the RESET button. To enable this function again, run the undo factory-configuration prohibit command.

7. One console interface

8. LAN interfaces: eight GE electrical interfaces

9. WAN interfaces: two GE combo interfaces

10. Power socket

11. Jack for power cable locking strap

NOTE:

Insert a power cable locking strap in this jack to secure the power cable.

-

Slot Layout

Table 3-204 Slots on the AR651U-A4
Slot Type Slot ID Slot Direction Remarks
MIC slot 1 Transverse -

Ports

Table 3-205 Ports on the AR651U-A4
Port Connector Type Description Available Components
One console interface RJ45

The console interface can connect to an operation terminal for onsite configuration.

  • Standards compliance: RS232
  • Working mode: duplex Universal Asynchronous Receiver/Transmitter (UART)
  • Data equipment type: Data Circuit-terminating Equipment (DCE)

Console cable

LAN interfaces: eight GE electrical interfaces RJ45

A GE electrical interface (10/100/1000 Mbit/s auto-sensing) transmits and receives services at 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s.

  • Standards compliance: IEEE802.3, IEEE802.3u, and IEEE802.3ab
  • Working mode: full-duplex (10/100/1000 Mbit/s auto-sensing)
  • Maximum distance: 100 m
NOTE:

GE0 is a management interface and is used for web-based management and email-based deployment.

All LAN-side GE interfaces can be configured as WAN-side interfaces.

Ethernet cable

WAN interfaces: two GE combo interfaces

GE electrical interface: RJ45

GE optical interface: LC/PC

A GE combo interface consists of an optical Ethernet interface and an electrical Ethernet interface on the panel. The two interfaces have only one internal forwarding interface. The electrical and optical interfaces are multiplexed, and only either of them can work at a time. When either of the Ethernet interfaces is working, the other interface is shut down.

  • The GE electrical interface (10/100/1000 Mbit/s auto-sensing) transmits and receives services at 10 Mbit/s, 100 Mbit/s, or 1000 Mbit/s.
  • The GE optical interface (100/1000 Mbit/s auto-sensing) transmits and receives services at 100 Mbit/s or 1000 Mbit/s.
NOTE:

By default, a combo interface works in auto mode and automatically works as an optical or electrical interface.

GE8 is the BootROM management network port on a device and is used to upgrade the device software through the BootROM menu.

  • GE electrical interface: Ethernet cable
  • GE optical interface: optical module

The following optical modules are supported:

FE SFP&eSFP optical modules

GE eSFP optical modules

GPON&EPON optical modules (supported in V300R023C00 and later versions)

One USB 2.0 interface USB 2.0 Type A

A USB interface provides up to 480 Mbit/s upload and download rates.

  • Standards compliance: USB 2.0
  • Working mode: Host

USB 2.0-compliant USB flash drive

Indicators and Buttons

Figure 3-111 Indicators and buttons on the AR651U-A4

1. PWR indicator

2. SYS indicator

3. USB indicator

4. iNET indicator

5. CTRL indicator

6. WWAN indicator

7. RSSI indicator

8. GE combo interface indicators (GE8 and GE9)

9. LAN (GE0 to GE7) interface indicators

10. Hard disk ACT indicator

11. Hard disk error indicator

-

Table 3-206 Indicators on the AR651U-A4
Silkscreen Name Color Status Description
PWR PWR indicator Green Steady on The system power supply is normal.
- Off The system power is off.
SYS SYS indicator Green Slow blinking The system is running properly.
Green Fast blinking The system is being powered on or restarting.
Red Steady on A fault that affects services has occurred. The fault cannot be rectified automatically and requires manual intervention.
- Off The system software is not running or is being reset.
USB USB indicator Green Steady on The system has been upgraded or configured using a USB flash drive.
Green Blinking The system is being upgraded or configured using a USB flash drive.
Red Steady on The system fails to be upgraded or configured using a USB flash drive.
- Off No USB flash drive is connected, the USB interface has failed, or the indicator has failed.
iNET iNET indicator Green Steady on The network service has been established.
- Off The network service is unavailable.
CTRL CTRL indicator Green Steady on The device has been connected to the controller.
Green Blinking The plug-and-play deployment is ongoing by the registration query center.
- Off The device is not connected to the controller.
WWAN WWAN indicator Green Steady on A 4G/3G/2G connection has been established or is active.
Green Blinking Data is being transmitted or received over the 4G/3G/2G connection.
- Off The 4G/3G/2G connection has not been established or is inactive.
RSSI RSSI indicator Green Steady on The 4G/3G/2G signal strength is high.
Green Fast blinking The 4G/3G/2G signal strength is medium.
Green Slow blinking The 4G/3G/2G signal strength is low.
- Off No 4G/3G/2G signal is available.
GE8 and GE9 GE combo interface indicator (GE8 and GE9) Green Steady on A link has been established on the corresponding GE combo interface.
Green Blinking Data is being transmitted or received on the corresponding GE combo interface.
- Off No link is established on the corresponding GE combo interface.
GE0 to GE7 LAN interface indicator (GE0 to GE7) Green Steady on A link has been established on the corresponding LAN interface.
Green Blinking Data is being transmitted or received on the corresponding LAN interface.
- Off No link is established on the corresponding LAN interface.
- Hard disk ACT indicator Green Steady on A hard disk is present.
Green Blinking The system is performing the read-write operation on the hard disk.
- Off No hard disk is present.
- Hard disk error indicator Red Steady on The hard disk does not work normally.
- Off The hard disk is working normally.
Table 3-207 Buttons on the AR651U-A4
Silkscreen Name Description
RESET Reset button

This button is used to reset the router.

  • In an empty configuration scenario, ensure that the router has no console port input, and has no user login routers. If the Reset button is pressed and held for at least 5 seconds, you will access the registration query center of Huawei devices and obtain the cloud management platform address of routers for plug-and-play deployment.
  • In the configured scenario, hold down the button for at least 5 seconds to restore the factory settings.
  • To reset the router, hold down the button for less than 5 seconds.

Resetting the router will interrupt services. Exercise caution when deciding to press this button.

Technical Specifications

Table 3-208 Technical specifications of the AR651U-A4
Item Specification
Installation type
  • Rack
  • Work bench
  • Against the wall
Chassis height [U] 1 U
Dimensions without packaging (H x W x D) [mm(in.)]
  • Basic dimensions (excluding the parts protruding from the body): 44.0 mm x 300.0 mm x 220.3 mm (1.73 in. x 11.81 in. x 8.67 in.)
  • Maximum dimensions (the depth is the distance from ports on the front panel to the handle on the rear panel): 44.0 mm x 300.0 mm x 224.7 mm (1.73 in. x 11.81 in. x 8.85 in.)
Dimensions with packaging (H x W x D) [mm(in.)] 110 mm x 435 mm x 360 mm (4.33 in. x 17.13 in. x 14.17 in.)
Weight with packaging [kg(lb)] 2.89 kg (6.35 lb)
Weight without packaging [kg(lb)] 1.92 kg (4.23 lb)
CPU 1.4 GHz, 4 Cores
Memory 4 GB
NAND Flash 1 GB
Console port RJ45
RTC Supported
LAN ports 8 x GE electrical
WAN ports 2 x GE combo
Number of service board slots 1
MIC slots (default/maximum) 1/1
SIC slots (default/maximum) 0/0
WSIC slots (default/maximum) 0/0
XSIC slots (default/maximum) 0/0
Redundant MPUs Not supported
RPS input Not supported
PoE Not supported
IP rating IP20
MTBF [years] 42.67 years
MTTR [hours] 2 hours
Availability 0.9999946496
Typical power consumption [W] 28 W
Maximum power consumption [W] 35 W
Power supply mode AC power adapter
Number of power modules 1
Rated input voltage [V] 100 V to 240 V, 50 Hz/60 Hz
Input voltage range [V] 90 V to 264 V, 47 Hz to 63 Hz
Maximum input current [A] 3 A
Maximum output power [W] 36 W
Redundant power supply Not supported
Types of fans Built-in
Number of fan modules 1
Heat dissipation mode Air cooling
Airflow Left-to-right airflow
Noise at normal temperature (acoustic power) [dB(A)] 41.9 dB(A)
Long-term operating temperature [°C(°F)]

0°C to 45°C (32°F to 113°F)

NOTE:

When the altitude is 1800–5000 m (5906–16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (722 ft.).

Long-term operating relative humidity [RH] 5% RH to 95% RH, non-condensing
Long-term operating altitude [m(ft.)] < 5000 m (16404.2 ft.)
Storage temperature [°C(°F)] -40°C to +70°C (-40°F to +158°F)
Overtemperature alarm Supported
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Update Date:2025-08-13
Document ID:EDOC1100041787
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