How to setup printer to open cash drawer automatically? Your cash drawer can be configured to automatically open when you print a receipt for each transaction. Here are the steps you can take to configure your cash drawer. Plug in the RJ12 connector cable (which looks similar to a phone line) from the cash drawer into your the receipt printer. Next, go to the  Settings  menu in Windows 10, select  Devices  and select  Printers & Scanners  on the left-hand menu. Select the printer you’d like to configure, and click on the  Manage  button. Next, click on the  Printer Properties  link and a window will open. From here, select the  Device Settings  tab. Under  Installable Options , find the  Peripheral Unit Type  and change it to  ‘Cash Drawer’ . Change the  Peripheral Unit 1  and  Peripheral Unit 2  fields to  ‘Document Bottom’  to have the drawer open after the receipt starts printing. If you want the cash drawer to trigger before the receipt prints, select  ‘Document Top’  in  Peripheral Unit 1  and  2 Click  OK to save these settings and perform a test sale to see if it’s been configured properly.