... together.When the tabletop socket is connected, you can pop up the socket by pressing the button on the ... panel; when the tabletop socket is used finished, pop down to keep it anti-dusty, and the table ... power, South Africa power, audio, video, Tel, data, MIC, HDMI, USB, VGA, XLR, RCA etc.4. The tabletop socket can ... -ground;3.Ground connection is necessary.Product parameters Pop up desktop outlet box