If you purchased a PMP 450d that was capped at 40 Mbps, and now you need to increase the maximum sustained rate of the unit beyond this, you might be wondering what you need to purchase.
In the case of the 450d, you will need the license key:
C000045K007A - PMP 450 20 TO Uncapped MBPS UPGRADE KEY
You may be saying, "But my 450d is 40 Mbps, not 20 Mbps. Is this the right one?"
The answer is YES. This key will update the radio to eliminate the 40 Mbps limit, and allow it to function at its maximum capacity.