C100 MAC Address
You need to be at the clocking terminal with the ADMIN card
Press the MENU button on the clock.
Swipe the Admin card
Scroll down the menus to SYS INFO
Press F4/OK
Scroll down to DEV INFO
Press F4/OK
Scroll down to VIEW MAC
Press F4/OK
This will display the MAC address for the selected terminal.
When you are finished, press the ESC key until you are back at the main screen.