Flex BMR463 User Manual page 4

Figure 2 shows the RC switch in "On" position.
SW 1
Figure 2: RC switch in 'On' position
Figures 3 & 4 show the connection of two types of USB-to-PMBus adapters.
Figure 3: Connection o FPM KEP91017 PMBus to USB adapter
Evaluation Board User Guide – ROA 128 5077 2022-05-17 4 (9)