Description

Huawei CloudEngine S5731-L8P2ST-RUA Remote Unit Switch (8-Port PoE+)

Name: Huawei S5731-L8P2ST-RUA | 8-Port PoE+ Remote Unit Switch
Brand: Huawei
SKU: 98011780
Rating: 5.00 (1 reviews)

The Huawei CloudEngine S5731-L8P2ST-RUA is a high-density, full-Gigabit remote unit (RU) designed for the Huawei Simplified Network Solution. Featuring 8 PoE+ ports, this compact switch provides both high-speed data access and robust power delivery to terminal devices such as Wi-Fi 6 Access Points, IP Cameras, and VoIP phones, all while maintaining a fanless, silent profile.

Key Features

Full Gigabit Access: 8 x 10/100/1000Base-T downlink ports for high-bandwidth terminal connectivity.
Powerful PoE+ Support: All 8 ports support IEEE 802.3at PoE+, providing up to 30W per port (within the total power budget), simplifying cabling by eliminating extra power lines.
Flexible Hybrid Uplinks: Equipped with 1 x GE SFP (Optical) and 1 x 10/100/1000Base-T (Electrical) uplink ports to adapt to different transmission distances.
Simplified Management: Managed as a “remote card” of a central switch. Zero-touch provisioning and centralized configuration via Huawei’s simplified architecture.
Fanless Energy Saving: Silent operation (0 dB) makes it perfect for quiet environments like classrooms, hospital wards, and high-end offices.

Performance

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

Power Modules & Hardware Components

To ensure the S5731-L8P2ST-RUA operates at full PoE capacity, it requires the correct external power components:

Standard Power Adapter: Typically paired with a 150W AC/DC power adapter (Output: 54V DC).
Optical Modules: Compatible with Huawei GE SFP modules (Multi-mode/Single-mode) for fiber uplinks up to 10km+.
Installation Kits: Supports wall-mounting, DIN rail mounting, and under-the-desk installation for maximum space efficiency.

Why Buy S5731-L8P2ST-RUA for Your Network?

Reduce Cabling Costs: By deploying this RU near the terminals, you only need one uplink cable to the central switch instead of eight individual long-run cables.
Centralized Control: Since the RU has no independent management plane, there is no need to configure IP addresses or manage firmware separately, reducing O&M workloads.
Future-Proof for Wi-Fi 6: With 8 PoE+ ports, it is the ideal expansion unit for high-density Wi-Fi 6 AP deployments.

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.)]	82.0 mm x 375.0 mm x 242.0 mm (3.23 in. x 14.76 in. x 9.53 in.)
Chassis height [U]	0.86 U
Chassis material	Metal
Weight without packaging [kg(lb)]	1.59 kg (3.51 lb)
Weight with packaging [kg(lb)]	1.98 kg (4.37 lb)
Typical power consumption [W]	9.69 W (device) 11.36 W (device + power adapter)
Typical heat dissipation [BTU/hour]	33.06 (device) 38.76 (device + power adapter)
Maximum power consumption [W]	Without PoE: 10.0 W (device)/11.67 W (device + power adapter) Full PoE load: 146.0 W (PoE: 131 W)
Maximum heat dissipation [BTU/hour]	Without PoE: 34.12 (device)/39.82 (device + power adapter) Full PoE load: 498.17
Static power consumption [W]	6.48 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 0-1800 m (0-5906 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: 90–290 V AC; 47–63 Hz
Maximum input current [A]	2.68 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-L8P2ST-RUA

Saadi – March 19, 2026

Rated 5 out of 5
Great line-rate forwarding.The latency is significantly lower compared to our previous generation switches.

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