Set up Square Register

Who is this article for?
  • Account owners and team members can set up Square Register. Only account owners can create and set up an account.
  • About Square Register

    Square Register

    Square Register is a fully-integrated POS system that helps you with all of your business transactions from one, easy-to-use interface. It’s payments, software, and hardware all-in-one. The Customer display for Square Register invites customers to pay intuitively with a simple tap, dip, or swipe, so you can keep your line moving fast.

    Before you begin

    You can connect, set up, mount, and power up your Square Register wherever you plan to process payments at your business. 

    To sign in to your Square account on your Square Register, you need your Square account login credentials. Learn how to create your Square account in the Square setup guide. After you sign in, you can adjust your date, time, and language settings.

    To set up Square Register, you need Wi-FI or Ethernet internet access. Take a look at Square Register technical specifications to learn about what’s in the box, dimensions, connectivity, and more.

    Square’s hardware is subject to testing and certification for compliance with country-specific regulations, such as for FCC compliance in the United States, or Restriction of Hazardous Substances (RoHS) compliance in the EU. Therefore, Square’s hardware is only approved for use in the country for which it is intended. For example, hardware sold or intended for sale in the United States is not approved for use outside of the United States.

    Step 1: Connect Square Register cables

    Grab your Square Register and cables to start connecting it.

    1. Remove the protective wrap.

    2. Carefully lift the customer display out of your Square Register and remove the foam pad.

    3. Place the customer display aside for now—make sure you lay it down flat.

    4. Connect the accessory hub to your Square Register.

    5. Plug the cable into one of the micro USB ports located on the bottom of your Square Register.

    6. Connect the power adapter to the hub.

    7. Plug one end of the power adapter cable into the power adapter and the other end into a power outlet.

    Step 2: Connect customer display for Square Register

    You can set up your customer display as docked or undocked.


    1. Place the customer display back into its slot on your Square Register.
    2. Press firmly on the bottom edges of the customer display until you hear it click to make sure it’s locked in place.
    3. Double check each side of the display, both sides need to be snapped in evenly for the customer display to function in the docked position.
    4. If you need to undock the customer display, press and hold the release latch located on the bottom of your Square Register and lift the customer display out. Make sure that the latch is completely released before removing the customer display as it can not be removed without the latch release.



    1. Grab the included micro USB cable.
    2. Plug one end into the customer display and the other end into the bottom of your Square Register.


    Step 3: Power up and connect your network

    Turn on Square Register

    1. Press and hold the power button on the base of your Square Register display until the Square logo appears on the screen.
    2. Square Register needs to be plugged into a power outlet to function. It is not battery powered.

    Connect to the internet

    When you turn on Square Register for the first time, you will be asked to connect to a network. You can connect your Square Register to your network through either Wi-fi or Ethernet.

    Connect through Wi-Fi:

    1. Select your preferred network from the list of available networks.
    2. Enter the password if necessary.

    Connect through Ethernet:

    1. Plug your Ethernet cable in the accessory hub.
    2. Your Square Register will automatically connect to your network once the Ethernet is plugged into the accessory hub and the hub is connected to power.

    Step 4: Adjust your settings and update software

    Set your language, date, and time preferences and update your Square Register software.

    Adjust your Square Register settings

    To adjust the language or date and time settings:

    1. Tap ≡ More > Settings > Hardware > General.
    2. Tap Language and select your language of choice.
    3. For date and time, toggle Set Automatically ON and select your time zone.
    4. You can also set the date and time manually by toggling Set Automatically OFF and selecting the date, time, and time zone.

    To adjust the brightness and display settings:

    1. Tap ≡ More > Settings > Hardware.
    2. Tap Customer Display.
      • Use the slider to control the brightness level.
      • Toggle ON/OF the idle screen options.
    3. Tap Main Display
      • Use the slider to control the brightness level.
      • Select from the sleep timer options.

    To adjust the volume settings:

    1. Tap ≡ More > Settings > Hardware > Sounds.
    2. Use the slider to control the volume level.
    3. Toggle Enable card network sounds ON/OFF.

    Update Square Register software

    • You’ll be prompted to choose a software update option: Update Now or Update Later. The initial software update takes around 20 minutes to complete, but may take up to one hour in the future.
      • Tap Update Now to start the software update immediately. You will not be able to accept card payments during a software update, but you can record cash payments and navigate within the app.
      • Tap Update Later to defer the software update. The software update will start automatically overnight as long as Square Register is turned on and plugged in.
    • Software updates for Square Register will complete first, followed by software updates for the customer display.

    Step 5: Mount Square Register (optional)

    You can mount your Square Register with adhesive or screws.

    Mount your Square Register using adhesive

    1. Pick a spot to mount.
    2. Use a damp cloth to clean the area where you want to secure your Square Register.
    3. Wait for the surface to dry completely.
    4. Grab the mounting plate and remove the paper backing from the adhesive located on the underside of the plate.
    5. Make sure the raised cleat of the mounting plate is on your side of the counter, not the customer’s side.
    6. Adhere the plate to your counter in the desired position and press down firmly for 30 seconds.
    7. Wait 30 minutes for the adhesive to set. If you need to remove the plate, slowly pull the tabs on the adhesive strips until it releases.
    8. Place your Square Register onto the mounting plate with the larger screen facing right. Make sure the cleat is positioned in its slot.
    9. Turn your Square Register 90 degrees clockwise so it locks in place.

    Square Register security plate

    Mount your Square Register using screws and thumb nuts

    To mount using screws, you need a drill and all the included tools: drill bit, thumbscrew, and thumb nut.
    Note: You should not attach the mounting plate to your Square Register before attaching the plate to your countertop. If you do, you won’t be able to remove the plate from your Square Register.

    1. Grab the mounting plate.
    2. Pick a spot on your counter for your Square Register, position the plate, and use a pencil to mark the four screw holes on your counter.
    3. Make sure the raised cleat is on your side of the counter, not the customer’s side. Maximum counter thickness is 1.75 inches (45 mm).
    4. Use your drill and drill bit to make the four holes you’ve marked for the plate.
    5. Position the mounting plate onto the holes you’ve drilled, then insert a thumbscrew into each hole.
    6. From the underside of your counter, place a thumb nut onto each thumb screw and tighten until the thumb nut is flush against your counter.
    7. Place your Square Register onto the mounting plate with the larger screen facing right. Make sure the cleat is positioned in its slot.
    8. Turn your Square Register 90 degrees clockwise so it locks in place.

    Step 6: Select accessories for your Square Register (optional)

    You can view printers, cash drawers, barcode scanner, scales, and more accessories that are compatible with your Square Register.

    1. Go to Square’s compatibility page for hardware accessories.

    2. Click an accessory option.

    3. Click the Select Square hardware drop-down menu and select Square Register.

    4. View a list of accessories compatible with your Square Register.

    5. Under Compatible with, click # products to view more information.

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