Today we've released a Surface System Aggregator firmware update for the Surface Pro. This firmware update revises system power reporting.
For Surface Pro, the updates are available in MSI format from the Surface Pro Drivers and Firmware page in the Microsoft Download Center. Click Download to download the following file:
For your reference, here is a full list of the driver version that is updated in this release and the improvements it provides:
• Surface System Aggregator (v233.1763.257.0) revises system power reporting