Connect Recommended Hardware to Square Stand
Square Stand makes it easy to connect compatible cash drawers, receipt printers and barcode scanners. To start, be sure your Square Stand is connected to the USB hardware hub and plugged into a power socket.
Connect Hardware to the Square Stand
USB cash drawers, receipt printers and barcode scanners can be plugged into the USB port of the Stand's hardware hub. the USB hub is the rectangular component that connects to the Stand and then to the power adapter.
For Square Stand (2nd Generation) only, the hardware hub is optional. If you do not want to use the hardware hub, simply remove it from the power cable and connect the USB-C power cable directly to the Stand and socket.
When a piece of hardware is properly connected, the Square app will give you confirmation. To test your connected hardware:
Tap More from the navigation bar at the bottom of your screen.
Tap Settings > Hardware.
Tap the hardware you’d like to test from the list (e.g. Cash Drawers, Printers).
From here, you’ll see the connected hardware.