If you must use VGA, Surface Hub has an audio input port that uses a 3.5-mm plug. Source audio is provided by DisplayPort and HDMI cables. See the following chart for available resolutions. The Surface Hub has three choices of video input: DisplayPort, HDMI, and VGA. Your choice of video cable depends on what is available from your source input. Device Manager shows duplicate names for some devices. The peripheral devices can be viewed in Device Manager.

These peripheral devices are created for Touchback and Inkback. When a Surface Hub is connected to a guest computer with the wired connect USB port, several USB devices are discovered and configured. Wired port connections on 84' Surface Hub Port enumeration Wired port connections on 55' Surface Hub These are the port connections used for Guest Mode on the 55' and 84' Surface Hubs. Provides access to the HID input devices mouse, touch, keyboard, and stylus back to the guest PC. Ingest into Surface Hub PC, usually with the VGA video input. Support simultaneous guest input display with guest input #1 and guest input #2 (one full resolution, two thumbnails). Support simultaneous guest input display with guest input #1 and guest input #3 (one full resolution, two thumbnails). Support simultaneous guest input display with guest input #2 and guest input #3 (one full resolution, two thumbnails). Use these ports on the Surface Hub for Guest Mode. When an HDCP source is connected, use the side keypad to change source inputs. To display your content without violating HDCP requirements, use the keypad on the right side of the Surface Hub to directly choose the external source. If Surface Hub encounters a High-Bandwidth Digital Content Protection (HDCP) signal, the source is displayed as a black image. Surface Hub's internal PC takes video and audio from the connected device and presents them on the Surface Hub.

If the source device is Windows-based, that device can also provide Touchback and Inkback. Guest Mode uses a wired connection, so people can display content from their devices to the Surface Hub. Cameras, microphones, speakers, and other peripherals, are sent to the external PC, in addition to pen and touch. Power the Surface Hub from an external Windows 10 or Windows 11 PC, turning off the embedded computer of the Surface Hub. Present another device's display on the Surface Hub screen and interact with both the device's content and the built-in Surface Hub experience. Mirror the Surface Hub's display on another device.

The method you use depends on your scenario and needs. When connecting external devices and displays to a Surface Hub, there are several available options. Surface Hub will use the video input that you select until a new connection is made, the existing connection is disrupted, or the Connect App is closed.

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