Hub with External Power Supply 4-Port USB 3.0

Quick Answer: This powered USB 3.0 hub adds four USB ports to a computer and draws its power from its own external supply rather than from the computer. In a science lab it lets one laptop or desktop run several USB sensors, interfaces or data loggers at the same time.

Why a Science Lab Needs a Powered Hub

Digital sensors for temperature, pH, conductivity, motion or light increasingly connect by USB, and a class practical may need three or four of them on one computer. Laptops often have only two ports, and each port can supply only a limited current. An unpowered hub shares that small supply between every device plugged into it, which is where dropped connections and missing data points usually start.

A hub with an external power supply avoids the problem. The supply plugs into the mains and feeds the four ports directly, while the single cable to the computer carries the data. USB 3.0 ports are also backward compatible, so older USB 2.0 sensors and interfaces work in them at their own, slower speed.

In practice the hub sits on the bench with the sensors, and only one cable runs to the computer. That keeps crowded benches tidy and means a laptop can be disconnected from the whole setup in one move at the end of a lesson. Devices that take power through their own Micro USB socket, rather than from the hub, can be run from the separate Micro USB power supply.

Applications

• Running several USB sensors on one computer during a titration or rate-of-reaction practical
• Connecting a data-logger interface, a USB camera and a mouse to a single classroom laptop
• Powering small USB devices from the mains rather than from a laptop battery
• A teacher’s demonstration station where the computer also drives a projector

Specifications

Care & Handling

• Place the hub away from sinks, wash bottles and solution trays, as it is not protected against liquids.
• Plug in the external supply before connecting high-draw devices, so they are not running from the computer alone.
• Use the power supply that belongs to the hub rather than a substitute adapter with a different rating.
• Unplug it before wiping the case with a dry cloth, and never spray cleaning fluid near the ports.

Why Choose LabEquip

Science departments moving to sensor-based practicals, and colleges running data-logging labs, buy powered hubs so that each bench works from one computer. LabEquip lists this hub under chemistry lab equipment; ask about quantities per lab through the contact page.

Frequently Asked Questions

What is the difference between a powered and an unpowered USB hub?

An unpowered hub takes all its power from one computer port and shares it among the connected devices. A powered hub has its own supply, so each port can deliver full USB power whatever the computer provides.

Will older USB 2.0 sensors work with this hub?

Yes. USB 3.0 hubs are backward compatible with USB 2.0 devices, which then run at their normal USB 2.0 speed. The hub does not make an older sensor any faster.

Does the hub need drivers?

USB hubs are normally recognised by current Windows, macOS and Linux systems without extra drivers. Sensors plugged into the hub still need whatever software their own maker specifies.

Can I connect the hub to a computer that only has USB 2.0 ports?

Yes, it will work, but everything connected through it is then limited to USB 2.0 speed. For most classroom sensors, which send small amounts of data, that makes no noticeable difference.

Why does a sensor keep disconnecting from a laptop without a hub?

Common reasons are too little power from the port, a loose cable, or a power-saving setting that switches off idle USB ports. A powered hub deals with the first; turning off USB selective suspend in Windows power settings often fixes the last.

Can the hub be used with a tablet?

Only if the tablet supports USB host connections and has a suitable port or adapter. Many tablets use USB-C, so an adapter may be needed between the tablet and the hub’s cable.

Last Updated: September 2026