To add a computer manually, you need to know that computer's MAC address. To see how to find it, select your computer's operating system:
Mac OS X
- Open System Preferences.
- Open Network.
- Select your ethernet interface.
- Click Advanced....
- Select the Ethernet tab.
- The Ethernet ID listed is your MAC address.
Windows
- Select Start->Run....
- Enter "cmd" and press return.
- At the command prompt, type "ipconfig/all".
- Look for the heading for the ethernet adapter.
- Look for the line which reads "Physical Address." This is your MAC address.
Linux
- In the shell, enter "ifconfig".
- Look for the line which starts with "ether". This is your MAC address.