Also, from intel... might be able to help you determine what the MAC should be..
"What do the numbers and letters on the bar code label on Intel adapters mean?
There are various numbers and letters printed on the bar code on Intel adapters. Depending on the model and age, these numbers can appear in different locations. Here is a general guide to the markings.
* 6 digits - 3 digits (e.g. 761767-003) - This is the adapter printed board assembly number. The first six digits (which may include letters) are the number we use to absolutely identify the product. The 3 digits following represent minor revisions that have no effect on functionality and can be ignored.
* 12 characters (e.g. 0007E90018EA) - This is the MAC address, also known as the Ethernet ID. This address is stored on the card. Every network adapter built has a unique MAC address. This number uniquely identifies the adapter on the network.
* 5 digits (e.g. 36013) - This number is a manufacturing code used by Intel for internal tracking purposes.
Note: There are other 6 digit - 3 digit numbers on the adapters at various locations, such as the number on the metal bracket and the MP and PB numbers silk-screened onto the board. These represent individual component part numbers and should be ignored when identifying the adapter. "