The USB and audio cable might be attached to the adapter or come as separate cables.Ĭonnecting the VGA to HDMI adapter to your laptop/PC is simple. VGA to HDMI adapters come with a VGA male input, HDMI female output, USB cable for power, and an audio cable. VGA to HDMI adapters can output good quality video in 1080p resolution at 60 frames per second. The best adapters combine the analog VGA input with stereo audio input to a single HDMI output to your monitor or TV. These VGA to HDMI adapters contain a built-in chip that actively converts the analog signal from your laptop's VGA port to a digital HDMI output. Restart the Mac with the display connected.VGA to HDMI adapters work, providing the best way to connect an old computer with VGA ports only to a TV or monitor with HDMI input.Check with the display's manufacturer to make sure you're using the cable they recommend. Try using a different cable that you know is in working order.If possible, check to see if using a different display or a different adapter works. If your display has more than one video connection, see if using another connection on the display works.For example, a mini DisplayPort to DVI adapter can't be connected to a DVI to HDMI adapter. Some video adapters can't be connected together.

If you're using more than one video adapter to connect your display (the adapters are 'chained' together), try connecting the display using only one adapter if possible.If you're using a video adapter, unplug the video adapter from your Mac, then plug it back in to reseat the connection.Disconnect the video cable where it plugs into your Mac, then plug it back in to reseat the connection.If you're using a display hub, switchbox, or 'KVM,' try connecting your display's video cable directly to your Mac instead.If you're using a Mac Pro (Late 2013) make sure your displays are connected to the right ports.Make sure the external display's power cable is securely connected and that your display is turned on.If you're using an Apple notebook, try connecting its power adapter.Check the connections to your Mac and external displays:

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