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Huawei

S5751-L8T2HJ-RUA

S5751-L8T2HJ-RUA (8*10/100/1000BASE-T ports, 2*Hybrid 2.5G SFP ports, PoE via hybrid cable, Fanless)

Brand

Huawei
Port

8
Rate

GE
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SKU: 98012491 Category:
Description

Huawei S5751-L8T2HJ-RUA: 8-Port GE Remote Unit for Simplified Networks

The Huawei S5751-L8T2HJ-RUA is a high-reliability Remote Unit (RU) designed for Huawei’s High-Quality Simplified Network Solution. This device extends Gigabit Ethernet connectivity directly to the service terminal while being centrally managed by a core switch. It is engineered to reduce cabling complexity and O&M costs in modern enterprise environments.

Interface & Hardware Configuration

  • Downlink Ports: 8 x 10/100/1000Base-T Ethernet ports.

  • Uplink Ports: 2 x GE SFP ports for high-speed fiber backhaul.

  • Cooling: Advanced fanless design for 100% silent operation.

  • Management: Fully managed via a central switch (Plug-and-Play).

Key Advantages of the S5751-L8T2HJ-RUA

1. Innovative RU Architecture

The S5751-L8T2HJ-RUA is not just a switch; it acts as a “remote line card” of the central switch. This allows you to manage hundreds of ports across multiple floors as if they were on a single device, drastically simplifying your network topology.

2. Zero-Touch Deployment

Save time and money on installation. The unit requires no independent configuration. Once plugged into the central switch, it automatically synchronizes data and security policies, making it easy for non-technical staff to replace or install units.

3. Energy Efficient & Silent

With no moving fans, the S5751-L8T2HJ-RUA operates without noise (0dB). It is the perfect choice for quiet spaces like high-end offices, hotel rooms, and library study areas, while its low power consumption helps reduce operational costs.

4. Versatile Mounting Options

The compact and rugged casing supports multiple installation methods, including:

  • Wall-mounting

  • Desktop placement

  • DIN-rail installation (with optional brackets)

Specification

Specification

Item Specification
Dimensions without packaging (H x W x D) [mm(in.)] Basic dimensions (excluding the parts protruding from the body): 43.6 mm x 195 mm x 160 mm (1.72 in. x 7.68 in. x 6.30 in.)

Maximum dimensions (the depth is the distance from ports on the front panel to the parts protruding from the rear panel): 43.6 mm x 195 mm x 166.2 mm (1.72 in. x 7.68 in. x 6.54 in.)
Dimensions with packaging (H x W x D) [mm(in.)] 116.0 mm x 285.0 mm x 225.0 mm (4.57 in. x 11.22 in. x 8.86 in.)
Chassis height [U] 1 U
Chassis material Metal
Weight without packaging [kg(lb)] 1.2 kg (2.65 lb)
Weight with packaging [kg(lb)] 1.69 kg (3.73 lb)
Typical power consumption [W]
  • 11.14 W (via a power adapter)
  • 13.14 W (via a hybrid cable)
Typical heat dissipation [BTU/hour]
  • 34.12 (via a power adapter)
  • 44.82 (via a hybrid cable)
Maximum power consumption [W]
  • Power adapter: 10.00 W (device), 11.87 W (device + adapter)
  • Hybrid cable: 17.57 W
Maximum heat dissipation [BTU/hour]
  • Power adapter: 34.12 (device), 40.49 (device + adapter)
  • Hybrid cable: 59.96
Static power consumption [W]
  • 5.35 W (via a power adapter)
  • 7.15 W (via a hybrid cable)
MTBF [years] 84.12 years
Availability > 0.99999
Noise at normal temperature (acoustic power) [dB(A)] Noise-free (no fans), < 30
Noise at normal temperature (acoustic pressure) [dB(A)] Noise-free (no fans), < 20
Number of card slots 0
Number of power slots 0
Number of fans modules 0
Redundant power supply The uplink hybrid optical-electrical port and adapter back up each other. The power adapter is not provided by default and can be purchased as required.

02221791: power adapter (China)

02221933: power adapter (Europe)

02221936: power adapter (UK)

02221932: power adapter (USA)
Long-term operating temperature [°C(°F)] –5°C to +45°C (23°F to 113°F) at an altitude of 0 to 1800 m (0 to 5906 ft.)

When the power adapter AD-120100E0W (Europe) (part number: 02221933) is used, the long-term operating temperature of the device ranges from –5°C to +40°C (23°F to 104°F).
Restriction on the operating temperature variation rate [°C(°F)] 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.).

Devices cannot start when the temperature is lower than 0°C (32°F).
Storage temperature [°C(°F)] –40°C to +70°C (–40°F to +158°F)
Long-term operating relative humidity [RH] 5% RH to 95% RH, non-condensing
Long-term operating altitude [m(ft.)] 0–5000 m (0–16404 ft.)
Storage altitude [m(ft.)] 0-5000 m (0-16404 ft.)
Power supply mode
  • Power adapter
  • PoE_IN
Rated input voltage [V] Power adapter HW-120100C9W (China), part number 02221791:

  • Power adapter input: 170 V AC to 240 V AC; 50/60 Hz
  • Power adapter output: 12 V DC

Power adapter AD-120100E0W (Europe), part number 02221933:

  • Power adapter input: 100 V AC to 240 V AC; 50/60 Hz
  • Power adapter output: 12 V DC

Power adapter AD-120100B0W (UK), part number 02221936:

  • Power adapter input: 100 V AC to 240 V AC; 50/60 Hz
  • Power adapter output: 12 V DC

Power adapter AD-120100U0W (USA), part number 02221932:

  • Power adapter input: 100 V AC to 240 V AC; 50/60 Hz
  • Power adapter output: 12 V DC

Hybrid cable (PoE): 56 V DC
Input voltage range [V] Power adapter HW-120100C9W (China), part number 02221791:

– Power adapter input: 170 V AC to 270 V AC; 47 Hz to 63 Hz

Power adapter AD-120100E0W (Europe), part number 02221933:

– Power adapter input: 90 V AC to 264 V AC; 45 Hz to 65 Hz

Power adapter AD-120100B0W (UK), part number 02221936:

– Power adapter input: 90 V AC to 264 V AC; 45 Hz to 65 Hz

Power adapter AD-120100U0W (USA), part number 02221932:

– Power adapter input: 90 V AC to 264 V AC; 47 Hz to 63 Hz

Hybrid cable (PoE): 54 V DC to 57 V DC
Maximum input current [A] 1 A
Memory –
Flash memory –
Console port Not supported
Eth Management port Not supported
USB Not supported
RTC Not supported
RPS input Not supported
Power supply surge protection [kV] Differential mode: ±4 kV; common mode: ±6 kV
Ingress protection level (dustproof/waterproof) IP20
Types of fans None
Heat dissipation mode Natural heat dissipation
Airflow direction –
PoE Not supported
Certification EMC certification

Safety certification

Manufacturing certification
FAQ

FAQ

Q: Can I manage the S5751-L8T2HJ-RUA as a standalone device?

A: No. As a Remote Unit (RU), it must be connected to a compatible Huawei Central Switch to function. It does not have an independent management IP or console for standalone setup.

Q: Is this model PoE-enabled?

A: The S5751-L8T2HJ-RUA is a standard GE model (Non-PoE). If you need to power devices like IP phones or APs, please consider the S5751-L8P2J-RUA or S5751-L8P2X-RUA.

Q: What is the benefit of the “HJ” designation?

A: The “HJ” version often features specific optimizations for reliability or refined physical dimensions tailored for certain deployment standards. It maintains full compatibility with the Huawei Simplified Network ecosystem.

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