You should be able to confirm the MAC address of the ProTraXX in either of these two ways:
1. Look at the unit's serial number. The last four digits of the S/N should replicate the last four hexadecimal digits (octets 5 and 6) of the unit's MAC address. For instance, the MAC address will look as follows:
00:10:46:00:XX:XX
Fill in the X's with the last for digits of the S/N to complete the MAC ID.
2. Using AMI Terminal or TraXX Config ("TraXX" drop down menu -> "Control") you can send a Custom String query to the unit to request the MAC ID. The command is MC, which should be enclosed in quotes and followed by a carriage return, as follows:
"MC" h0D