You can find the ethernet hardware address of your network card in System Preferences' Network preference pane.
#LINUX FIND MAC ADDRESS OF NETWORK CARD FOR MAC OS X#
Instructions for Mac OS X 10.3 and later: If your card does not have the HW Address on it, or it is already installed in the computer, use the instructions below to determine the HW Address. Your HW address actually is 000094560e45.) If it is not, you need to pad the beginning with 0's. NOTE: These strings may omit 0's at the beginning - make sure your HW Address is 12 characters long. How do I Find the Ethernet HW Address on Various Operating Systems?Įxternal network adapters and some Ethernet cards will have the HW Address imprinted on them, have a sticker on them with the information, or it will be included in the manual. With leading zeros dropped: 0:40:5:1c:e:9f (Note that when dropping leading zeroes, '00' is represented by '0'.).Digits separated by a period: 0040.051c.0e9f.Digits separated by spaces: 00 40 05 1C 0E 9F.It may be referred to as either a hardware address, Ethernet address, NODE ID, adapter address, or MAC (medium access control) address, and might appear as: It was permanently assigned and "burnt in" to the card's electronics when it was manufactured and cannot be altered.Īn Ethernet card transmits its address with each packet of data, so it acts as a signature or fingerprint of your computer.
Each digit must be a number between 0 and 9 or a letter between A and F ( Example: 0040051c0e9f ). It is a 6-byte hexadecimal number represented by 12 digits (12 digits in hex = 48 bits = 6 bytes). The Ethernet hardware address (HW Address) is your Ethernet card's unique identity.
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