Thats a usb connector. Plug it into the usb header, in the row with the 5 pins. When your looking at the motherboard with the usb ports on the bottom, the red should be on the left. Its an odd connector, you most likely have just one front usb port
It's a single USB port connector. My Silverstone has ones like that. It can be plugged into half a 10-pin usb connector on your motherboard. The empty ground goes where the missing pin is in the connector.
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