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- Remove the cover of the Npaq, .
- Locate Open your Npaq and locate the control board. The control board is on the left side while facing the front of the unit, and has the FireWire connectors as well as red and white Communication Channel switches. If
- Locate the revision, which is typically located in the bottom left or bottom right of the board. Revisions can be -, A, or B. If you have an MXR board installed, this may be difficult to see.
- Only revision B is upgradeable, revisions - and A are obsolete.
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