Fujitsu P27-9TQ Operating Manual page 43

To be able to use the Daisy Chain function, this must be enabled in the OSD.
MENU
Image
OSD
Advanced
Information
► Press the
► Press the button and then
► Press the button to highlight the Daisy Chain function.
► Press the button to apply the On setting.
► Press the button to save the settings and return to the main menu.
When enabling or disabling the daisy-chain function in the OSD, the
power supply via USB-C is interrupted briefly!
As soon as the daisy-chain function is active, automatic detection of
other signal sources (e.g. HDMI) is disabled.
The speed of data transmission is reduced on USB-C from USB 3.1 Gen1
(up to 5 Gbit/s) to USB 2.0 (up to 480 Mbit/s).
► Press the button

If switched to an input signal that does not support a daisy chain, the daisy
chain function is disabled automatically.
Fujitsu
Presence Sensor
Proximity
Daisy Chain
Overdrive
DDC/CI
Factory Recall
button to call up the main menu.
to switch to the Advanced submenu.
To change the input signal manually.
ADVANCED
Off
50
On
Off
On
Operation
39