LG SQ780S-W 31.5" 4K Smart Monitor with webOS and Ergo Stand - Manual (Page 15)

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External Device Connection
Some of the cables are not provided. Connect a HD receiver, DVD, or VCR player to the monitor and select an appropriate input mode.
For the best picture and sound quality, connecting external devices to your monitor using HDMI cables is recommended.
USB Device connection
The USB port on the product functions as a USB hub.
Note
• It is recommended you install all Windows Updates to keep your Windows up-to-date before connecting to the product for use.
• Peripheral devices are sold separately.
• A keyboard, mouse, or USB device can be connected to the USB port.
• The charging speed may vary depending upon the device.
• To use USB Downstream port of monitor, user must connect Upstream port of monitor to Host PC using USB C-C or USB C-A cable.
• When the USB C-C cable is connected between Upstream port of monitor and Host PC, the Downstream port of monitor support USB 2.0 device.
• When the USB C-A cable is connected between Upstream port of monitor and Host PC, the Downstream port of monitor support USB 2.0 device. However,
Host PC must support USB 2.0 function.
• Cautions when using a USB device.
- A USB device with an automatic recognition program installed, or that uses its own driver, may not be recognized.
- Some USB devices may not be supported or may not work properly.
- It is recommended to use a USB hub or hard disk drive with power supplied. (If the power supply is not adequate, the USB device may not be recognized
properly.)