Description

Huawei CloudEngine S5731-L8LP2ST-RUA Remote Unit (8-Port PoE+)

Name: Huawei S5731-L8LP2ST-RUA | 8-Port PoE+ Low Power Remote Unit
Brand: Huawei
SKU: 98012186
Rating: 5.00 (1 reviews)

The Huawei CloudEngine S5731-L8LP2ST-RUA is an ultra-compact, energy-efficient Gigabit Remote Unit (RU). It is designed to extend the capabilities of a central switch to the edge of the network, providing 8 Gigabit PoE+ ports for terminal access. With its “Low Power” optimized design and fanless architecture, it is the premier choice for green offices, smart hotel rooms, and quiet healthcare environments.

Key Highlights

Optimized PoE+ Delivery: Features 8 x 10/100/1000Base-T ports, all supporting IEEE 802.3at PoE+, ensuring reliable power for Wi-Fi 6 APs and IoT sensors.
Dual Uplink Design: Equipped with 1 x GE SFP (Optical) and 1 x 10/100/1000Base-T (Electrical) ports, providing redundant or flexible upstream connectivity.
Zero-Config Maintenance: Functions as a remote extended module. The central switch handles all configurations, software upgrades, and management, making it “plug-and-play” for site technicians.
Ultra-Low Noise (0 dB): Completely fanless design with natural heat dissipation, ensuring no acoustic interference in quiet work or living spaces.
Energy Efficient: The “LP” series is engineered for lower idle power consumption, helping enterprises meet carbon reduction goals.

Performance

Forwarding performance: 15Mpps
Switching capacity: 12/120 Gbps

Power Solutions & Connectivity

To maintain its slim and lightweight profile, the S5731-L8LP2ST-RUA uses external power components:

External Power Adapter: Requires a 54V DC power input (typically a 150W AC/DC adapter) to drive the PoE+ ports.
Optical Fiber Connectivity: Compatible with Huawei GE SFP transceivers for long-distance link-up with the central switch.
Versatile Installation: Can be mounted on walls, under desks, or within standard 86mm electrical boxes (depending on site requirements).

Why Buy from Our Store?

Genuine Huawei Quality: We provide 100% original, brand-new Huawei CloudEngine units.
Expert Technical Support: Need help choosing a compatible Central Switch? Our engineers are ready to assist.
Global Shipping: Fast and secure logistics to your project site.

Specification

Item	Specification
Dimensions without packaging (H x W x D) [mm(in.)]	Basic dimensions (excluding the parts protruding from the body): 38.0 mm x 210.0 mm x 130.0 mm (1.5 in. x 8.27 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): 38.0 mm x 210.0 mm x 130.0 mm (1.5 in. x 8.27 in. x 5.12 in.)
Dimensions with packaging (H x W x D) [mm(in.)]	76.0 mm x 357.0 mm x 242.0 mm (2.99 in. x 14.06 in. x 9.53 in.)
Chassis height [U]	0.86 U
Chassis material	Metal
Weight without packaging [kg(lb)]	1.06 kg (2.34 lb)
Weight with packaging [kg(lb)]	1.36 kg (3 lb)
Typical power consumption [W]	8.6 W (device) 9.44 W (device + power adapter)
Typical heat dissipation [BTU/hour]	29.34 (device) 32.23 (device + power adapter)
Maximum power consumption [W]	Without PoE: 9.0 W (device)/9.66 W (device + power adapter) Full PoE load: 59.6 W (PoE: 45 W)
Maximum heat dissipation [BTU/hour]	Without PoE: 30.71 (device)/32.96 (device + power adapter) Full PoE load: 203.36
Static power consumption [W]	4.1 W
MTBF [years]	75.78 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 5905.44 ft.)
Restriction on the operating temperature variation rate [°C(°F)]	When the altitude is 1800-5000 m (5905.44-16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (721.78 ft.). The device cannot start when the temperature is lower than 0°C (32°F). The operating temperature of a device ranges from -5°C to +45°C (23°F to 113°F) when the device uses the following optical modules: – GE optical modules with a transmission distance of less than or equal to 10 km
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 input: 100–240 V AC; 50/60 Hz Power adapter output: 56 V DC
Input voltage range [V]	Power adapter input: 90 V AC to 290 V AC; 45 Hz to 65 Hz
Maximum input current [A]	1.07 A
Memory	–
Flash memory	–
Console port	Not supported
Eth Management port	Not supported
USB	Not supported
RTC	Not supported
RPS input	Not supported
Service port surge protection [kV]	Common mode: ±6 kV
Power supply surge protection [kV]	Power adapter: ±6 kV in differential mode and ±6 kV in common mode
Ingress protection level (dustproof/waterproof)	IP20
Types of fans	None
Heat dissipation mode	Natural heat dissipation
Airflow direction	–
PoE	Supported
Certification	EMC certification Safety certification Manufacturing certification

Reviews (1)

1 review for S5731-L8LP2ST-RUA

Gomez – March 13, 2026

Rated 5 out of 5
Great attention to detailin the packaging. No scratches or hardware issues upon arrival.

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