MPPT 100/20 - VE direct

I want to plug in a VE Direct cable into my MPPT 100/20 charge controller. However, there is tag hanging down from the VE socket. Can anyone tell me what this does, and whether or not it should be removed before plugging in the VE Direct cable?

Thank you for your response. That has resolved my issue. I now understand what the jumper is for.

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