USB & Interface Hubs

Category overview

USB hubs and small interface docks expand a single port on a host machine into several. They are common on desks where a notebook only has one or two USB-C (Universal Serial Bus Type-C) ports, and on workstations where the case ports are not enough for the connected peripherals.

What this category covers

Bus-powered USB-A and USB-C hubs for occasional use, externally powered hubs for permanent desk setups, and small interface hubs that combine USB ports with card readers, Ethernet or display outputs.

How to choose a hub

Decide between bus-powered and externally powered

Bus-powered hubs draw current from the host port and are convenient for travel. They struggle when several devices try to draw current at the same time, especially portable drives. An externally powered hub uses its own adapter and gives each downstream port the full rated current.

Match the upstream version to the workload

A USB 2.0 hub is fine for keyboards, mice and printers. A USB 3.x hub is needed for fast external storage or capture devices. The hub's upstream connection is the shared bandwidth ceiling for everything plugged into it.

Look at the downstream port mix

Some hubs have all USB-A ports; others mix USB-A and USB-C. A few include extras like Gigabit Ethernet, an SD card reader or HDMI output. Pick the mix that fits the day-to-day connections rather than buying the largest port count.

Key features to compare

Power Delivery passthrough

USB-C hubs that support Power Delivery passthrough let the host charge through the hub while it carries data. This is useful for notebooks with only one or two ports.

Per-port switches

Some powered hubs include a switch on each port. This is useful for shared workstations where a device needs to be electrically disconnected without unplugging it.

What to check before buying

• How many ports do you actually need, and of which types?
• Will the hub stay on a desk or move between locations?
• Will any device on the hub draw significant current (external SSD, portable scanner, charging phone)?
• Does the host machine support Power Delivery, and does the hub need to pass it through?

Frequently asked questions

How many devices can I connect to one USB hub?

The USB specification allows up to 127 devices per host controller, including hubs, but real-world limits are much lower. Bandwidth and power are the practical constraints. Plan for the actual mix of devices, not the theoretical maximum.

Can I daisy-chain hubs?

Yes, hubs can be chained, but every level adds latency and reduces available bandwidth. For more than a handful of devices, an externally powered hub with enough ports is more reliable than chaining smaller hubs.

Will a USB 3.x hub make my USB 2.0 devices faster?

No. The hub does not change the speed of devices plugged into it. A USB 2.0 keyboard or mouse runs at USB 2.0 speeds whether connected to a USB 2.0 or USB 3.x hub. The benefit appears when several USB 3.x devices share the upstream link.

Why does my external drive disconnect on a hub?

Most often this is a power issue: a bus-powered hub cannot supply enough current for the drive. Move the drive to an externally powered hub or a port directly on the host machine. Faulty cables and worn connectors are the next most likely cause.

What is the difference between a hub and a dock?

A hub mainly multiplies USB ports. A dock adds a wider mix of interfaces (display outputs, Ethernet, audio) and is built for permanent desk use, often with its own power supply and a single cable to the notebook. The line between the two has blurred in recent USB-C devices.