Description

Huawei CloudEngine S5731S-L8P2HT-RUA Remote Unit (8-Port PoE+)

The Huawei CloudEngine S5731S-L8P2HT-RUA is a high-density, full-Gigabit Remote Unit (RU) designed for the most demanding enterprise campus networks. Equipped with 8 x 10/100/1000Base-T PoE+ ports and a flexible GE SFP/RJ45 hybrid combo uplink, this unit provides massive connectivity and power directly to the network edge. Its fanless design and zero-touch management make it the industry standard for silent, high-performance expansion.

Key Features

8-Port High-Density PoE+: All 8 downlink ports support IEEE 802.3at PoE+, allowing you to power a large array of Wi-Fi 6 APs, IP phones, and security cameras from a single compact device.
Flexible Hybrid Uplinks: Features 1 x GE SFP and 1 x 10/100/1000Base-T combo ports. This provides the flexibility to use fiber-optic for long-distance backhaul or copper Ethernet for existing short-range connections.
Zero-Touch O&M: Functioning as a remote service card of a central switch (e.g., S6730-H), it requires no independent configuration. All management and updates are handled centrally.
Silent Fanless Design: With 0 dB noise output, it is the perfect choice for noise-sensitive environments like premium hotel rooms, hospital wards, and libraries.
Cost-Efficient Cabling: Reduces horizontal cabling complexity by consolidating 8 gigabit links into a single uplink, saving on infrastructure materials and labor.

Performance

Forwarding performance: 15Mpps
Switching capacity: 20/120 Gbps

Accessories & Compatibility

Power Supply: Requires an external 54V DC power supply (typically a Huawei 150W AC/DC adapter).
Optical Modules: Compatible with Huawei GE SFP modules (SX/LX/BIDI).
Central Switch Support: Requires a Huawei Central Switch (e.g., CloudEngine S6730-H, S12700E) to operate as a managed entity.
Mounting Options: Supports wall-mount, DIN rail, and desktop placement for flexible onsite installation.

Why Choose S5731S-L8P2HT-RUA?

Maximum Port Density: Provides the highest port count available in the standard-size RU form factor with full PoE support.
Hybrid Upstream Versatility: The “HT” combo uplink ensures you can adapt to any onsite cabling environment (Fiber or Copper) without switching models.
Future-Proof for IoT: With 8 PoE+ ports, it is ready to support the next generation of smart office sensors, APs, and automation controllers.

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 275.0 mm x 196.0 mm (3.23 in. x 10.83 in. x 7.72 in.)
Chassis height [U]	0.86 U
Chassis material	Metal
Weight without packaging [kg(lb)]	0.75 kg (1.65 lb)
Weight with packaging [kg(lb)]	0.94 kg (2.07 lb)
Typical power consumption [W]	8.82 W (device) 10.82 W (device + power adapter)
Typical heat dissipation [BTU/hour]	30.09 (device) 36.92 (device + power adapter)
Maximum power consumption [W]	Without PoE: 9.60 W (device)/11.60 W (device + power adapter) Full PoE load: 146 W (PoE: 131 W)
Maximum heat dissipation [BTU/hour]	Without PoE: 32.76 (device)/39.58 (device + power adapter) Full PoE load: 498.17
Static power consumption [W]	5.6 W
MTBF [years]	71.36 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	Cold backup of uplink hybrid optical-electrical ports or electrical ports and power adapters, cold backup of uplink hybrid optical-electrical ports and electrical ports, and preferential power supply by power adapters (By default, no power adapter is provided, and the power adapter 02221024 can be used.)
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 PoE_IN
Rated input voltage [V]	Power adapter input: 100–240 V AC; 50/60 Hz PoE input: 56 V DC
Input voltage range [V]	Power adapter input: 90–290 V AC; 47–63 Hz PoE input: 54–57 V DC
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

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