The basic steps for connecting a mouse

A mouse connects to your computer in one of two ways: through a cable plugged into a USB port, or wirelessly through a receiver that plugs into a USB port. Wired mice work when ready after you plug them in. Wireless mice need you to insert batteries first, then plug in the receiver, and sometimes press a small button on the mouse to pair it with the receiver.

The whole process takes less than a minute. Your computer recognizes most mice automatically — you do not need to install software or restart. If your mouse does not work right away, the problem is usually a loose connection, dead batteries, or the receiver not fully inserted into the USB port.

Key Takeaways

  • Wired mice plug directly into any USB port on your computer and work when ready without setup.
  • Wireless mice require batteries and a small receiver that plugs into a USB port, and may need a pairing button pressed to connect.
  • Most computers recognize a mouse automatically without needing driver software or a restart.
  • If your mouse does not respond, check that the cable is fully inserted, batteries are fresh, or the receiver is pushed all the way into the port.

Connecting a wired mouse

A wired mouse has a cable with a USB connector on the end. Look at the back or sides of your computer tower, or the back of your monitor or keyboard, for a rectangular USB port. The USB connector is flat and rectangular — it only fits one way. Push it straight in until you feel it click or seat fully.

Your computer should recognize the mouse within a few seconds. Move the mouse around to test it. The cursor on your screen should move with your hand. If nothing happens, try a different USB port — some ports on older computers do not work reliably. If you have tried two or three ports and the mouse still does not work, the cable may be damaged or the mouse may be broken.

Connecting a wireless mouse

A wireless mouse comes with a small receiver, usually about the size of a USB thumb drive. Before you do anything, open the battery compartment on the bottom of the mouse and insert the batteries — usually two AA or AAA batteries. Check the label inside the compartment to see which way they go. Close the compartment firmly.

Plug the receiver into any USB port on your computer. Wait about five seconds. Some wireless mice pair automatically at this point. Others have a small button on the bottom or side that you press once to pair the mouse with the receiver. Check the instruction sheet or the bottom of the mouse for a pairing button — it is often labeled with a wireless symbol or the word "Connect." Press it once and wait a few seconds for the light on the receiver to stop blinking, which means the pairing is complete.

Move the mouse to test it. If the cursor does not move, check that the batteries are fresh and inserted correctly, and that the receiver is pushed all the way into the USB port. If the receiver light is off or not blinking, the batteries may be dead.

What to do if the mouse does not work

Start with the simplest checks. For a wired mouse, unplug it and plug it back in firmly. For a wireless mouse, check that the batteries are fresh and inserted the right way, then unplug the receiver and plug it back in. Wait five to ten seconds and try moving the mouse again.

If that does not work, try a different USB port. Some computers have USB ports that do not provide enough power, especially on the front of the tower. Ports on the back usually work better. If you have a wired mouse and a wireless one, try the wired one in the same port to see if the port itself is the problem.

If you have tried multiple ports and the mouse still does not work, the mouse itself may be broken or the cable may be damaged. Wireless mice can also fail to pair if the receiver is too far from the mouse — try moving them closer together, within a few feet of each other.

USB ports and where to find them

A USB port is a small rectangular opening on your computer. Desktop computers usually have several ports on the back of the tower and sometimes on the front. Laptops have them on the sides. The port is about half an inch wide and a quarter inch tall. If you are not sure which opening is a USB port, look for the symbol of a trident with a circle at the top — that is the USB symbol.

Newer computers have USB-C ports, which are smaller and oval-shaped. Most mice still use the older rectangular USB-A connector, so they will not fit into a USB-C port without an adapter. If your computer only has USB-C ports and your mouse has a rectangular connector, you will need a USB-A to USB-C adapter, which costs a few dollars at any electronics store.

Wireless versus wired: which is better

Wired mice are simpler — they work as soon as you plug them in and never need batteries. They also never lose connection. The trade-off is that the cable can get in the way or catch on things, and you have less freedom to move the mouse around.

Wireless mice give you more freedom to move and no cable to manage. The trade-off is that you have to buy and replace batteries every few months, and the connection can occasionally drop if the receiver is too far away or if something blocks the signal. Most people find wireless mice worth the small inconvenience.

Frequently Asked Questions

Do I need to install software or drivers for my mouse to work?

No. Most mice work when ready without any software. Your computer recognizes them automatically. Some gaming mice or mice with extra buttons come with software that lets you customize what those buttons do, but that is optional — the mouse will work without it.

Can I use a mouse with a laptop?

Yes. Laptops have USB ports on the sides. Plug a wired mouse in or plug in the receiver for a wireless mouse, and it works the same way as on a desktop. Many people use a mouse with a laptop because the trackpad can be awkward for long periods of work.

What if my mouse has a USB-C connector but my computer only has USB-A ports?

You need a USB-A to USB-C adapter. These are inexpensive and widely available. Plug the adapter into your USB-A port, then plug the mouse's USB-C connector into the adapter. It works the same as plugging directly in.

How far away can a wireless mouse be from the receiver?

Most wireless mice work reliably within 10 to 15 feet of the receiver, though the exact range depends on the model. If your mouse keeps disconnecting, try moving the receiver closer to where you use the mouse, or move the mouse closer to the receiver.

Can I use two mice on the same computer?

Yes. You can plug in a second wired mouse or receiver into another USB port, and both will work at the same time. The cursor will respond to whichever mouse you move last. This is useful if two people are sharing a computer or if you want to switch between a mouse and a trackpad.