Jetson AGX Orin development kit PCIe power limit

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
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I checked the documentation “NVIDIA Jetson AGX Orin Developer Kit Carrier Board Specification” for the PCIe power limit:

  • on page 43, Table 6-2 “Interface Supply Current Capabilities” shows max current of 5.5 A at 12 V for PCIe connector
  • on the same page, Table 6-3 “Supply Current Capabilities per Connector per Supply” shows only 3A at 12V for the PCIe connector.

  1. Why is the current limited to only 3 A on the PCIe connector if the 12 V rail (NCP81599 DC-DC) is capable to deliver 5.5 A output? From Figure 6-1 the rail supplies only the PCIe and fan.

  2. Would a more powerful power adapter help (more than 90W)?