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AFE5809EVM: Figure 19 of user manual, strange red cable

Part Number: AFE5809EVM

Dear All,

On Figure 19 of AFE5809EVM user manual (slou338a), if you look at the top left of the figure you would see the power cables. I would like to know why the red cable is connected to the -5v jumper. Conventionally, red cable has positive voltage, so, I would like to know the polarity of red cable.

THanks