WSAL20734 – USB-HUB-4U/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The Waveshare USB-HUB-4U is an industrial USB hub with four USB 2.0 ports, ESD and over-voltage protection, and LED status indicators in a rugged metal enclosure.

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Technical overview

Four USB-A output ports conforming to USB 2.0, data rate up to 480 Mbit/s.
USB-B input for connection to a computer or SBC; plug-and-play without driver installation on supported operating systems.
Input power via USB-B: 5 V; external DC jack for higher loads.
Each port can supply up to 1.2 A when sufficient power is available; without an external power source over USB 2.0 only about 490 mA per port is possible.
Protection circuits: over-voltage, over-current, short-circuit, over-temperature, reverse current, under-voltage lock-out, 8 kV ESD protection, and filtering.
Red PWR LED indicates hub power; LED1–LED4 light when the corresponding USB port is successfully enumerated.
Operating temperature range −40 °C to 85 °C, no condensation; the device is not waterproof.
Industrial-grade metal enclosure with mounting holes for easy installation.
Supported operating systems: Windows XP/7/8/8.1/10/11, macOS 8.6 or later, Linux kernel 2.4.20 or later.

Notes and version constraints

The exact geometry of the DC barrel connector (outer/inner diameter) must be verified before purchasing a replacement power adapter.
Without an external power supply, available output current is significantly reduced; an external 5 V / ≥4 A adapter is recommended for loads exceeding 1.2 A.
The device is not waterproof; moisture may trigger protection circuits or cause damage.
If the input voltage is too high, the protective circuit cuts off power directly.
If the USB LEDs do not light: first check the correct power adapter and test the peripheral directly on another PC to rule out a faulty device.

Source and revision record

USB-HUB-4U - Waveshare Wiki
Source revision: 85934
Captured: 2026-09-02T04:14:49+00:00
SHA-256: 239c1088f0f1a9d253ba4d34b879acf5f113e5478799fad0edfe93506c20265b