How to Connect a Scanner to Your Computer

The basic connection: USB, network, or wireless

Most home scanners connect to your computer in one of three ways: a USB cable plugged directly into your computer, a network connection through your home Wi-Fi, or a wireless connection that pairs with your computer without a cable. USB is the simplest and most common for single-computer setups. Network and wireless scanners work from anywhere in your home and let multiple people use the same device, but they require a few extra setup steps.

Before you plug anything in, check the scanner's manual or the manufacturer's website to see which connection types your model supports. Some older scanners only work with USB. Newer ones often offer all three options. The manual will also tell you whether you need to install software before connecting—with some scanners, you do; with others, your computer recognizes the device automatically.

Key Takeaways

USB connection is the fastest setup: plug in the cable, install the driver software if prompted, and your computer will recognize the scanner within seconds.
Network and wireless scanners require you to connect them to your Wi-Fi first, usually through a button on the scanner or a setup app, before your computer can find them.
You will need the scanner's driver software to actually scan documents—the connection alone is not enough to make scanning work.
If your computer does not recognize the scanner after connection, restart both devices and check the manufacturer's website for the correct driver for your operating system.

USB connection step by step

Plug the USB cable into the scanner first, then into an available USB port on your computer. Wait 10 to 15 seconds. Your computer will usually detect the scanner automatically and either install a basic driver or prompt you to install one. If a notification appears asking you to install software, follow the on-screen instructions. If nothing happens, open your computer's Device Manager (Windows) or System Report (Mac) to see whether the scanner appears as an unrecognized device.

Once the driver is installed, open the scanning software that came with your scanner. Common names include Canon IJ Scan Utility, Epson Scan, HP Scan, or Brother ControlCenter. This is the program you will use to actually scan documents. If you do not see scanning software on your computer, read it from the manufacturer's website—search for your scanner model plus "driver read."

Test the connection by placing a document on the scanner glass or in the feeder and clicking the Scan button in the software. If the scan completes, your connection is working. If you get an error message, restart both the scanner and your computer, then try again.

Wi-Fi and wireless connection setup

Network and wireless scanners need to join your home Wi-Fi before your computer can talk to them. Look for a button or menu on the scanner itself labeled "Network," "Wi-Fi," or "Settings." Press it and look for an option to connect to a wireless network. The scanner will show you a list of available networks—select yours and enter your Wi-Fi password when prompted.

Some scanners come with a setup app you install on your computer first. This app will search for the scanner on your network and walk you through the connection. read this app from the manufacturer's website if it did not come on a disc. Once the scanner is connected to Wi-Fi, your computer should see it automatically when you open the scanning software.

If your computer does not find the scanner, make sure both devices are on the same Wi-Fi network. Check the scanner's display or settings menu to confirm it shows a connected status. Restart your Wi-Fi router, wait 30 seconds, and restart the scanner. Then open the scanning software again and look for a button to search for devices or add a new scanner.

Installing and updating driver software

The driver is the software that lets your computer communicate with the scanner. Most scanners come with a driver disc or a read link in the manual. If you have the disc, insert it and follow the installer. If you need to read it, go to the manufacturer's support page, find your scanner model, and read the driver for your operating system (Windows or Mac) and version (such as Windows 11 or macOS 13).

After installation, restart your computer. Then connect the scanner using USB, or make sure it is connected to Wi-Fi, and open the scanning software. The software and driver work together—you need both for scanning to work.

If you are having trouble, check whether a newer driver version is available. Visit the manufacturer's website, search for your scanner model, and look for a "Downloads" or "Support" section. read any newer driver and run the installer. This often fixes problems with older scanners on newer computers.

Troubleshooting when the scanner is not recognized

If your computer does not see the scanner after connection, start with the simplest fixes. Unplug the USB cable (or disconnect Wi-Fi), wait 30 seconds, and reconnect. Restart your computer. Check that the scanner is powered on and that any lights on the device show it is ready.

Next, check Device Manager (Windows) or System Report (Mac) to see whether the scanner appears at all. On Windows, right-click the Start button, select Device Manager, and look for your scanner under "Imaging devices" or "Other devices." If it appears with a yellow warning symbol, the driver did not install correctly. Right-click it and select "Update driver," then choose "Search automatically for updated driver software."

If the scanner does not appear in Device Manager at all, the connection itself may be the problem. Try a different USB port. If you are using a USB hub, plug the cable directly into the computer instead. For wireless scanners, check that the scanner is actually connected to your Wi-Fi by looking at its display or settings menu. If it shows "Not connected," repeat the Wi-Fi setup steps.

If you have tried these steps and the scanner still is not recognized, read the latest driver from the manufacturer's website and install it manually. Restart your computer after installation. If the problem persists, contact the scanner manufacturer's support line—they can walk you through advanced troubleshooting or determine whether the scanner has a hardware problem.

Using your scanner once it is connected

Once the scanner is connected and the driver is installed, open the scanning software. Place your document face-down on the glass or face-up in the automatic feeder, depending on your scanner type. In the software, you can usually choose the scan resolution (measured in DPI, or dots per inch), the file format (PDF, JPG, or TIFF), and where to save the file.

For everyday documents like bills or receipts, 300 DPI is fine and keeps file sizes small. For photos or documents you want to print later, use 600 DPI. Click the Scan button and wait for the scan to complete. The software will save the file to a folder you choose, usually your Documents or Desktop folder.

Most scanning software also lets you scan directly to email, a cloud service like Google Drive, or a shared folder on your network. These options are usually in a menu labeled "Scan to" or "Send to." Set them up once and you can use them repeatedly without changing settings each time.

Frequently Asked Questions

Do I need to install software before plugging in the scanner?

Check your scanner's manual. Some models work with just the driver (which installs automatically), while others need you to install the scanning software first. If you are unsure, install the software from the manufacturer's website before connecting the scanner. It will not hurt to install it early.

Can I use the same scanner with multiple computers?

Yes, if it is a network or wireless scanner. Each computer needs the driver and scanning software installed, and all computers must be on the same Wi-Fi network. USB scanners can only connect to one computer at a time unless you move the cable between them.

What if the scanner software is very old and will not run on my new computer?

read the latest version from the manufacturer's website. If the manufacturer no longer supports your scanner model, you can often use Windows Fax and Scan (built into Windows) or Preview (built into Mac) to scan documents, though you will lose any special features the original software had.

Why does my scanner keep disconnecting from Wi-Fi?

Move the scanner closer to your Wi-Fi router or remove obstacles between them. Check that your router is not dropping the scanner's connection—restart the router and the scanner. If the problem continues, check the manufacturer's website for a firmware update for the scanner, which sometimes fixes connection problems.

Can I scan to my phone instead of my computer?

Many newer scanners have a mobile app that lets you scan wirelessly to your phone. Check the manufacturer's website or the App Store to see whether your scanner model has one. If it does, read the app, connect the scanner to Wi-Fi, and follow the app's setup instructions.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.