Symptoms
S2722DC and S2722QC monitor users may report that their downstream USB ports do not function as expected. Ports 7 and 9 are the downstream ports.
Figure 1. S2722DC S2722QC port locations
Cause
Ports 7 and 9 require a USB Type-C cable (included) be connected to the USB Type-C upstream port (Port 5) on the monitor from your computer. This enables communication on ports 7 and 9 between your connected USB devices and your computer.
Port Description USB 5USB Type-C upstream portConnect the USB Type-C cable that came with your monitor to the computer. 7USB Type-A downstream portConnect your USB device. 9USB Type-A downstream port with Power ChargingConnect your USB device or charge your device.
Resolution
Updating to firmware version M3B102 or later resolves the issue. To download and install the firmware reference Dell Knowledge Base article How to Download and Install Dell Drivers.
Note: Before running the firmware update, ensure that your computer is connected to the monitor through a USB-C cable or USB-A to USB-C cable.
Workaround:
Connect USB Type C port 5 of monitor to USB-C port of computer (USB C to C cable is in box). If the user's computer does not have USB-C port, connect USB Type C port 5 of monitor to USB-A port of computer (USB C to A cable is purchased separately).Change the USB-C charging setting to Off in Off mode. Start by reinitializing the ports. Unplug the power cable and plug it back in to restart the monitor, or unplug the USB-C cable and plug it back in to reinitialize the port.To set USB-C charging to Off in Off mode, enter the on-screen display (OSD) menu and select Personalize, USB-C Charging, Off in Off Mode.
Figure 2. OSD Menu screen
