The "UltraSharp U2723QE" monitor from Dell cannot be used directly as a hub for a Microsoft Surface or other device to project or control its screen content, as is the case with a Surface Hub.

- The UltraSharp U2723QE has ports such as DisplayPort, HDMI, USB-A and USB-C, but these are mainly for connecting the monitor to a device and not for using the device itself as a hub.
- It does not offer built-in functions such as Guest Mode or Substitute PC Mode, which are available on the Surface Hub to view and interact with content from other devices.

To project content from a Surface or other device to the monitor, the device would need to be connected directly to the monitor, but the monitor itself does not act as a central hub for controlling and interacting with the device.