HP Multiple Displays on zbook 14,15,17

Technical white paper | Multiple displays on HP ZBook 14, 15 and 17 Mobile Workstations
Table 3. Multiple displays with DP 1.2 hub and/or DP 1.2 MST monitor
HP ZBook 14 Mobile Workstation HP ZBook 15 / 17 Mobile
Workstations with hybrid
graphics enabled
HP ZBook 15 / 17 Mobile
Workstations with hybrid
graphics disabled
Displays without a docking
station and DP 1.2 hub
Up to any 3 combinations of these
displays may be active:
Internal Panel
VGA
Displays connected to DP 1.2 hub*
Up to 6 displays may be active. A
maximum of 2 of these are from
group A and 4 from group B.
Group A:
Internal Panel
VGA
Group B:
Thunderbolt
Displays connected to DP 1.2 hub*
Up to any 4 combinations of these
displays may be active:
Internal Panel
Thunderbolt
VGA
Displays connected to DP 1.2 hub*
Displays with a docking
station and DP 1.2 hub
Up to any 4 combinations of these
displays may be active:
Internal Panel
Dock’s VGA
Displays connected to DP 1.2 hub*
Up to 6 displays may be active. A
maximum of 2 of these are from
group A and 4 from group B.
Group A:
Internal Panel
Dock’s VGA
Group B:
Thunderbolt
Dock’s DVI
Displays connected to DP 1.2 hub(s)*
Up to any 4 combinations of these
displays may be active:
Internal Panel
Thunderbolt
Dock’s VGA
Dock’s DVI
Displays connected to DP 1.2 hub(s)*
*Multiple displays may be connected to DP 1.2 hub. DP 1.2 hub is connected to a DisplayPort connector on the ZBook or docking station.
4
HP ZBooks and hybrid graphics
By leveraging display outputs from both the Integrated Intel GPU and the discrete GPU, HP ZBooks are able to support
a large number of independent displays. The usage of both Integrated Intel GPU and the discrete GPU is only available
when hybrid graphics is enabled.
Hybrid graphics is always enabled on the ZBook 14 and is enabled by default on the ZBook 15 and ZBook 17. When
hybrid graphics is disabled (may be disabled through BIOS Setup) on ZBook 15 or ZBook 17, the display outputs from
the Integrated Intel GPU are not available for use. As a result of this, the maximum number of independent displays
supported is reduced from ve to four on these models.
Special note on hybrid graphics during Pre-OS environment
With hybrid graphics on HP ZBooks, HP is using displays that may be connected to either one or both GPUs. Because the
standard industry support for Pre-OS session involves only one GPU, there is a standard industry limitation where only
displays connected to the integrated GPU may be used during Pre-OS. As such, display(s) attached to the discrete GPU
are not viewable during Pre-OS. For example, if users boot with the panel closed and an external display attached to a
DisplayPort connector driven by the discrete GPU, that display cannot show any image during Pre-OS session such as
during POST, when in BIOS setup, when running early diagnosis, when using Power-On Password, and so on.
HP has implemented special support to resolve this limitation. On HP ZBooks with hybrid graphics, any one display
whether it is connected to the integrated or discrete GPU is usage (viewable) during Pre-OS. This feature is called “Hybrid
Graphics Enhanced Display” and is by default enabled in BIOS. Users may disable this feature to only support Pre-OS
session with integrated GPU displays (which is typically limited to the internal Panel and VGA).