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Huawei

S5751-L8T2J-RUA

S5751-L8T2J-RUA (8*10/100/1000BASE-T ports, 2*2.5GE SFP ports, with 1*AC power adapter, Fanless)

Brand

Huawei
Port

8
Rate

GE
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SKU: 98012463 Category:
Description

Huawei S5751-L8T2J-RUA: Next-Gen 8-Port Simplified Remote Unit

The Huawei S5751-L8T2J-RUA is a key component of Huawei’s innovative simplified network architecture. Acting as a Remote Unit (RU), it extends Gigabit connectivity directly to the desktop or classroom while being centrally managed by a central switch. This “central switch + RU” design significantly reduces cabling and management complexity.

Technical Port Configuration

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

  • Uplink Ports: 2 x GE SFP ports (Providing reliable fiber or copper backhaul to the central switch).

  • Form Factor: Ultra-compact design, ideal for wall-mounting or desk-mounting.

Why Choose the S5751-L8T2J-RUA Remote Unit?

1. Zero Configuration & Plug-and-Play

The S5751-L8T2J-RUA is managed entirely by the central switch. Once connected, it automatically retrieves configurations, making it a true plug-and-play device. This reduces On-site Maintenance (O&M) costs by up to 80%.

2. Silent & Eco-Friendly Design

With a fanless design, this Remote Unit operates in complete silence. It is perfect for quiet environments such as libraries, classrooms, hotels, and high-end office spaces.

3. Simplified Cabling

By deploying the RU closer to the end-user, you only need one or two uplink fibers back to the weak current room, rather than running 8 separate cables. This “Fiber-to-the-Desktop” approach saves significant installation costs.

Compatible Central Switches

To function correctly, the S5751-L8T2J-RUA must be paired with Huawei central switches that support the simplified network architecture, such as:

  • CloudEngine S5731-H series

  • CloudEngine S6730-H series

  • CloudEngine S12700E series

Specification

Specification

Item Specification
Dimensions without packaging (H x W x D) [mm(in.)] Basic dimensions (excluding the parts protruding from the body): 35 mm x 195 mm x 130 mm (1.38 in. x 7.68 in. x 5.12 in.)

Maximum dimensions (the depth is the distance from ports on the front panel to the parts protruding from the rear panel): 35 mm x 195 mm x 136 mm (1.38 in. x 7.68 in. x 5.35 in.)
Dimensions with packaging (H x W x D) [mm(in.)] 93.0 mm x 285.0 mm x 190.0 mm (3.66 in. x 11.22 in. x 7.48 in.)
Chassis height [U] 0.8 U
Chassis material Metal
Weight without packaging [kg(lb)] 0.83 kg (1.83 lb)
Weight with packaging [kg(lb)] 1.28 kg (2.82 lb)
Typical power consumption [W] 10.52 W
Typical heat dissipation [BTU/hour] 35.90 BTU/hour
Maximum power consumption [W]
  • 7.46 W (body)
  • 10.93 W (device + adapter)
Maximum heat dissipation [BTU/hour]
  • 25.45 (device)
  • 37.29 (device + adapter)
Static power consumption [W] 4.85 W
MTBF [years] 102.91 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 Not supported
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
Rated input voltage [V] Power adapter HW-120100C9W (02221791) for China:

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

Power adapter AD-120100E0W (02221933) for Europe:

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

Power adapter AD-120100B0W (02221936) for the UK:

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

Power adapter AD-120100U0W (02221932) for the USA:

  • Power adapter input: 100 V AC to 240 V AC; 50/60 Hz
  • Power adapter output: 12 V DC
Input voltage range [V] Power adapter HW-120100C9W (02221791) for China:

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

Power adapter AD-120100E0W (02221933) for Europe:

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

Power adapter AD-120100B0W (02221936) for the UK:

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

Power adapter AD-120100U0W (02221932) for the USA:

– Power adapter input: 90 V AC to 264 V AC; 47 Hz to 63 Hz
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: Is the S5751-L8T2J-RUA a standalone switch?

A: No, it is a Remote Unit (RU) designed to work with a central switch. It cannot be managed independently as it relies on the central switch for its control plane and configuration.

Q: Does this model support PoE?

A: The S5751-L8T2J-RUA is a non-PoE model. If you need to power IP phones or Wi-Fi APs, please look for the S5751-L8P2J-RUA (the PoE version).

Q: Can I use standard SFP modules for the uplink?

A: Yes, the 2 GE SFP uplink ports support standard Gigabit optical modules, allowing for long-distance transmission via fiber.

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