Apple keyboards are different than PC keyboard because the Command ⌘ and Option/Alt ⌥ keys are switched. This causes a workflow disruption for me, because I use keyboard shortcuts for everything. I can't really use a Windows keyboard for my Mac, because of this problem.
Here's the Apple keyboard:
And the Windows keyboard:
Are there any third-part keyboards that have the Apple layout?
Best Answer
You can actually change the layout of your Windows keyboard. Go to System Preferences, Keyboard, and in the Keyboard tab, you will see a button "Modifier Keys..." Click on it and you can change the external keyboard layout.
For me, I mapped ALT key on external keyboard to Command and the Window key to alt/option, so my external PC keyboard now has the exact same layout as OS X keyboard.