The BENCHLAB PCI-E Slot Power Measurement Adapter enables power monitoring of the PCI-E slot 12V, 3.3V, and 3.3VAUX power from an external PCI-E 6-pin source. The adapter is rated for PCI-E 4.0 (x16 lanes at Gen 4 speeds).

You can switch between external and slot power supply for the 12V, 3.3V, and 3.3VAUX rail by moving the jumpers to the up or down position. In the up position, the power is supplied externally. In the down position, the power is supplied from the PCI-E slot. Note that the 12V is a double jumper and needs to be correctly positioned.

By connecting the PCI-E 6-pin to the BENCHLAB, you can measure the current, voltage, and power. You can learn more in this blog post: https://benchlab.io/blogs/technical/measuring-pcie-slot-power-consumption.