There is no official "KB-0705 Mac driver" because eMachines (which went defunct in 2013) never manufactured a single Mac product. You will not find a .dmg file on their old support site. But don't worry—here is how to make it work perfectly.
Modern Macs do not have PS/2 ports. To connect this keyboard, you will need a . Emachines Keyboard Kb-0705 Driver For Mac
If you've found a compatible driver, follow these steps to install it: There is no official "KB-0705 Mac driver" because
Use (free, open-source):