The iMac is not configured on our network yet, so this post is coming via one of our Windows machines.
We replaced our iMac's original wired keyboard and mouse with Bluetooth versions not long ago.
When we reinstalled OS X today, which ultimately took over two hours on the iMac, there were a number of inputs that needed to happen.
Wireless would not work at that time either. So, we needed to dig up our wired keyboard and mouse to complete the install and post install tasks.
So, don't throw out that wired keyboard and mouse! Otherwise, there will be a mad scramble to the local store for a keyboard and mouse to complete the install of OS X.
Not sure if a non-Apple keyboard and/or mouse could be plugged in once the OS X install had already been started. They probably would if present from the start.
Microsoft Small Business Specialists
*All Mac on SBS posts are posted on our in-house iMac via the Safari Web browser.