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Set Up the Square Reader

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Before setting up your Square Reader, make sure you have a compatible device with the latest version of the Square app.

The location of the power button, chip card reader slot, and LED lights on the Square reader.

1. Check the Battery of Your Square Reader

For an accurate battery reading, unplug your reader from any power source. 

Firmly press and release the button on the reader. Green lights indicate that you’re charged and ready to go. If you see a single red light, charge up immediately. Once your reader is on, you don’t need to worry about turning it off. It’ll automatically go into sleep mode after 2 hours of inactivity. To wake it up from sleep mode, firmly press and release the button on the side of the reader. 

2. Charge Your Square Reader

Connect one end of the accompanying USB cable to your reader and the other end to a USB port like a mobile phone charger, computer or car charger. 

It will take approximately 2 hours for a reader with low battery to charge completely. 

3. Wirelessly Connect Your Square Reader

The reader connects wirelessly with Bluetooth Low Energy (Bluetooth LE). Be sure you have the latest version of the Square app for your device- only the latest version supports the Square Reader.

To connect your reader:

  1. Press and release the button on your reader to turn it on.

  2. Go to your device settings and make sure Bluetooth is turned on.

  3. Open the Square app and tap More to navigate to the menu.

  4. Tap Settings > Hardware > Card Readers > Connect a Reader.

  5. Put your reader into pairing mode by pressing the reader’s button for 3–5 seconds. Remove your finger as soon as you see orange flashing lights. If you see red flashing lights, you’ve held the button too long and you’ll need to try again.

When connected, the reader will be listed as Reader Ready in-app.

Any necessary firmware updates will be automatically installed once the reader has been connected.

Now that you’re set up, learn more about accepting chip and PIN card and contactless payments.

Note: The wireless connection can be lost if the reader and device are more than ~3 metres apart.

If your reader was previously paired to a different device: Keep in mind, if you are reconnecting a reader that was previously paired to a different device, you may need to forget your reader from the device it was previously paired with. For more information on reconnecting a reader, check out our troubleshooting article.

What do the lights mean?

Connecting your reader

Lights Pairing Status
Four orange lights flashing Reader is in pairing mode
Four green lights Reader has successfully paired
Four red lights Reader failed to pair

Accepting a payment

Lights Payment Status
One green light Reader is ready to take a payment
Moving green lights Reader is processing a payment
Four green lights Payment was accepted
Four red lights Payment was declined

Checking your battery

Lights Charge
Four green lights Battery is 100% charged
Three green lights Battery is 75% charged
Two green lights Battery is 50% charged
One solid red light Battery is 25% charged
One blinking red light Battery is low – charge immediately

Connect Square Stand and the Square reader

If you’re using a Square Stand with the reader, set up is quick and simple. Just plug the included USB cable or Dock for Square Reader to the USB hardware hub on the Square Stand.

You can connect your reader wirelessly if there are no free USB ports on your Stand’s hardware hub.

Watch this video to learn how to connect the Square Stand and reader:

Find answers to Frequently Asked Questions and review these reader troubleshooting tips if you run into any issues.