This Delock switch can be used for connection of up to 4 different computers with VGA port to one VGA display or beamer. By using one of the 4 buttons you can manually select which computer should be connected to the VGA device.
This VGA to HDMI adapter by Delock can be used for the connection of a HDMI display to your PC or notebook. By using the stereo jack cable on the PC or notebook you can transmit the audio signal through this adapter. Furthermore this adapter will be powered via USB hence you do not need an additional power supply.