Which USB Port Should You Use for Your Mouse and Keyboard?

Mon, 13 Jul 2026 00:00:00 +0000

Setting up a new computer seems straightforward — plug in your mouse and keyboard, and you’re done. But if you’ve ever wondered whether it actually matters which USB port you use, the answer is yes. Choosing the wrong port can leave your faster, more demanding accessories running below their potential.

A recent report from Engadget breaks down exactly why your port selection matters and offers a simple rule of thumb: save your best ports for your most demanding devices.

The Golden Rule: Lowest-Speed Ports for Input Peripherals

Keyboards and mice are among the least bandwidth-hungry peripherals you can plug into a computer. They require very little power and data throughput to function perfectly. Because of this, the best practice is to connect them to your computer’s slowest USB ports — typically USB 2.0 ports.

Modern computers often ship with a mix of USB standards: USB 2.0, USB 3.2 Gen 1, USB 3.2 Gen 2, USB 3.2 Gen 2x2, and USB4 or Thunderbolt ports. The higher-speed ports (USB 3.x and above) deliver significantly more bandwidth — up to 40 Gbps with USB4 — and should be reserved for accessories that actually need that throughput.

Save High-Speed Ports for Bandwidth-Hungry Devices

Devices like external SSDs, flash drives, high-resolution monitors, and USB hubs benefit enormously from the faster data rates and higher power delivery of modern USB standards. Plugging a keyboard or mouse into a USB4 or Thunderbolt port is a waste of that port’s capability.

If you regularly transfer large files, edit video from an external drive, or run a multi-monitor setup through a USB-C dock, you’ll want every high-speed port you can keep free. Using a USB 2.0 port for your keyboard and mouse ensures those bandwidth-heavy devices aren’t competing for the same resources.

When the Rules Change

There are a few notable exceptions to this general advice. If you’re connecting your mouse and keyboard through a USB-C hub or dock — especially one that also handles storage and display connections — you’ll want to connect the hub to a high-speed port on your computer so all devices sharing that connection have sufficient bandwidth.

Similarly, if your keyboard has a built-in USB hub with USB 3.x pass-through ports, connecting it to a higher-powered port ensures those downstream ports can operate at full speed. And if your mouse or keyboard uses a USB-C connector, consider using a USB-C to USB-A cable so you can reserve the USB-C ports for devices that truly need them.

Bottom Line

The takeaway is simple: your keyboard and mouse will work just fine on any USB port, but they’ll work best on your slowest one. Leave the high-speed USB 3.x, USB4, and Thunderbolt ports free for the devices that genuinely need the extra bandwidth and power.

Tech Tips on Know the Tech

Which USB Port Should You Use for Your Mouse and Keyboard?

The Golden Rule: Lowest-Speed Ports for Input Peripherals

Save High-Speed Ports for Bandwidth-Hungry Devices

When the Rules Change

Bottom Line