USB3 Sever allows you to select using 7-DIP switches which pins are connected between the USB3 Type-A plug and socket. Slide the switch to "ON" to connect the signal which is labelled by the side of each switch.

This allows you to connect a USB2/USB3 device via power only (aka "USB Condom") and block both USB2 and USB3 data, USB2 data only or data and power, USB3 data only or data and power, or any other combination of signals.

High speed USB signals are sent over the DIP switch there will be some signal degradation which can reducing the length the cables you can use and in some cases may prevent a device from working properly (USB Sever are tested with 5000M USB3 devices).

VBUS connection is enabled/disabled by the DIP switch but power is switched using a MOSFET which allows up to 1.5 Amp/20 Volts to be switched (1.5A is a limitation of the USB3 connectors).

GND is always connected between USB3 Type-A plug and socket which allows VBUS to be switched bidirectionally (VBUS can be sourced from either plug or socket).