The black T3-DV2S-1B 3.5" HDMI Round Table Box with Button and LED from FSR is a round table box that provides convenient external display and AC power access for a computer or laptop. The keystone area features an HDMI connector and two blank keystone openings for snap-in connectors (sold separately), as well as an AC power plug. The table box has one button and one LED light. The button can be used for various functions, such as turning on/off the microphone, and the LED indicates when that function is active.