POSIM System Requirements for Mac OS

For best results, ensure the POSIM Server computer meets or exceeds system requirements

Operating Systems

  • macOS 10.15 (Catalina)
  • macOS 10.14 (Mojave)
  • macOS 10.13 (High Sierra)

CPU Speed and Type

  • Server: 2.5+ GHz QuadCore (64 Bit)
  • Clients: 2.0+ GHz DualCore (64 Bit)


  • Server: 8+ GB
  • Clients: 4+ GB

Hard Drive

  • Server: SSD or 7200+ RPM speed
  • Clients: SSD or 5200+ RPM speed
  • 15+ GB available

Monitor Resolution

  • 1024 x 768 minimum
    • NOTE: Dock must be hidden to use the minimum resolution

Backup Method


  • Wired or Wireless Network
    • Recommended: Wired network (1 Gigabit+) for optimal performance
  • Click here for remote database connection options


  • High-Speed Internet required for credit card processing and remote assistance

Supported Hardware

  • USB Star TSP 100 Receipt Printer
  • USB Zebra 2824 Plus or ZD410 Barcode Printer
  • USB APG or MS Cash Drawer
  • Any USB Invoice Printer (8.5 x 11)
  • Any USB Barcode Scanner
  • Any USB Credit Card Scanner (Track 2)


Note on Server OS: A server OS is not needed. For this reason, a server OS is not used in software testing. POSIM should still run on a server OS, but they are not officially supported.

Verifone PinPad 1000SE: Mac OS 10.11 (El Capitan) dropped support for this pin pad. If you upgrade to El Capitan you will need to use our newer EMV-capable devices for pin debit.

Legacy Zebra Printer: Mac OS 10.9 (Mavericks) dropped support for the Non Plus LP 2824 printer. If you upgrade to Mavericks or beyond you will need an LP2824 Plus or a Zebra ZD410 Plus label printer.