The VEX EXP Brain can be renamed, making it easier to identify which Brain is which. 

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When the Brain is connected, open the Brain dropdown. 

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Select the edit button next to the Brain's current name.

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Update the name, then click update.

Note: Spaces are not accepted. To separate words, use underscores.

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You will now see the updated Brain name. 

For more information, help, and tips, check out the many resources at VEX Professional Development Plus