Best Recommended Hardware

PC:

Windows 8 or 10 operating system with at least 8GB - 12 GB of RAM and an Intel processor (AMD or Celeron processors not recommended). 

MAC:

macOS Catalina 10.15.4           Disable macOS System Integrity - Catalina Only
macOS Mojave 10.14.6
macOS High Sierra 10.13.6
macOS Sierra 10.12.6
OS X El Capitan 10.11.6
OS X Yosemite 10.10.5
OS X Mavericks 10.9.5
OS X Mountain Lion 10.8.5
OS X Lion 10.7.5

Receipt Printer:

Citizen S310 II Receipt Printer or Star TSP 100 Receipt printer with USB connector. 

Cash Drawer:

Control Logic 1000 Cash Drawer

Bar Code Scanner:

Honeywell Bar-code Scanner Recommended - Honeywell Bar Code 3800 - Hand Held