USB splitters (often called USB hubs) let you connect multiple peripherals to one port.

• Everyday gear: keyboards, mice, flash drives, card readers, printers, webcams, and game controllers.
• Storage: external SSDs/HDDs can work, though some drives perform more consistently with a powered hub.
• Networking and media: some hubs add Ethernet or HDMI alongside USB ports; those features require a compatible USB-C port and the right hub design.
• Mobile devices: with a suitable USB-C OTG adapter, many phones/tablets can use hubs for accessories.

For smoother results, match the hub to your device’s port type (USB-A or USB-C) and USB version (USB 3.x for faster data). If you plan to charge or run power-hungry devices, a hub with its own power adapter can help.

Shoppers often say “USB splitter,” but most products are actually USB hubs.

• USB hub: an electronic device that manages data for multiple accessories from one computer port. Hubs can be bus-powered (draw power from your device) or powered (use an AC adapter).
• Power-only splitter/Y-cable: splits power from one port or charger to two cables, typically for charging. It doesn’t create extra data ports.
• Feature hubs: some USB-C hubs/docks add HDMI, SD/TF card slots, or Ethernet in addition to USB data ports.

For keyboards, mice, drives, and other accessories, choose a data hub. If you just want to share charging from one source, a power splitter can be useful. Product descriptions on the page will indicate “data hub” versus “charge-only.”

USB hubs can reduce speed because multiple devices share the bandwidth of a single computer port.

• USB version: the hub’s rating (USB 2.0 vs USB 3.x) sets the maximum potential speed.
• Workload mix: simultaneous file transfers, webcams, or audio interfaces can compete for throughput.
• Cables and length: longer or lower-quality cables can increase errors and retries.
• Power limits: bus-powered hubs may throttle or disconnect power-hungry devices under load.

To help maintain performance, use a hub that matches your fastest device (USB 3.x or higher), connect high‑performance storage to high‑speed ports, keep cables short, and consider a powered hub for demanding gear. Actual speeds vary based on devices, drivers, and usage conditions.

Start with your device and what you want to connect.

• Port type: match USB-A or USB-C. Newer USB-C hubs may support video, Ethernet, and charging pass‑through (PD).
• Speed: pick USB 3.x or higher for fast transfers and external drives.
• Power: choose a powered hub for multiple or power‑hungry devices; bus‑powered hubs suit lighter accessories.
• Ports and layout: count ports, allow space for larger drives, and consider on/off switches.
• Extras: SD/TF readers, Ethernet, audio, or dual‑display outputs if your device supports them.
• Use case: compact, cable-free designs for travel; sturdier hubs with AC adapters for a desk setup.

Filters on the page can help you quickly narrow to the features you need.

Dual displays are possible with the right hub/adapter and a compatible device.

• USB-A hubs: these expand USB ports only; they don’t output video.
• USB-C video hubs/docks: look for models with dual video outputs (e.g., two HDMI or HDMI + VGA) and notes like “extended display” or Multi‑Stream Transport (MST).
• Compatibility: your laptop/tablet may need a USB‑C port with DisplayPort Alt Mode, or a docking solution that uses drivers.
• Resolution/refresh: listings often specify 4K at 30/60 Hz; actual results depend on your device, cables, and configuration.

Check your device’s specs and the product details to confirm support, and consider using the hub’s power input if it offers pass‑through charging for stability.