By default, F1–F12 act as standard function keys. To use brightness/media controls:

The Emachines KB-0705 is a basic USB keyboard originally bundled with Windows-based eMachines desktop computers. This paper investigates whether a separate driver is required for full functionality on Apple macOS. Findings indicate that no official driver exists; however, the keyboard operates correctly using native macOS USB HID drivers, with minor key mapping differences. Recommendations for remapping modifier keys are provided.

If you want to map specific media controls or assign macros to unused keys (such as the Print Screen, Scroll Lock, or Pause/Break keys), native macOS tools are not enough. You will need a third-party utility. Recommended Software: Karabiner-Elements

The largest obstacle when using a Windows keyboard like the KB-0705 on a Mac is the layout of the modifier keys. By default, the keys will map as follows: acts as the Command (⌘) key. Alt Key acts as the Option (⌥) key.

: Most PS/2-to-USB adapters have a standard, rectangular USB-A connector. Since all modern Macs use the smaller, oval USB-C port, you will also need a simple USB-A to USB-C adapter to plug the keyboard into your Mac.