HP Z38c User Manual page 15

NOTE: You must connect the USB upstream cable from the source computer to the monitor to enable
the USB ports on the monitor.
NOTE: To set the video input source to USB-C, press the Menu button on the front of the monitor,
select Input Control, and then select
Select the option 3840 × 1600 @ 60 Hz + USB 2.0 for a higher vertical refresh rate and a lower USB
●
speed.
Or
Select the option 3840 × 1600 @ 30 Hz + USB 3.0 for a lower vertical refresh rate and a higher USB
●
speed.
USB-C Configuration.
Setting up the monitor 9