Dell ThunderDock WD22TB4 User Manual
Page 26
Table 9. New Gen TBT (Thunderbolt) Systems
MFDP system
Docked
system
configuration
Dell WD22TB4 Dock
BIOS setup options
Thund
erbolt
Modul
e
Base
Case
Enabl
e
exter
nal
USB
ports
Video
&
power
only
Enable
Thunde
rbolt
Disable
USB4
PCIe
Tunnelin
g
Dock
Overri
de
Syste
m
Dock
port
power
deliver
y
modes
Thund
erbolt
port
LAN
Video ports
Type-
C
MFDP
port
Type-
C USB
port
Type-
A USB
port
1
Off
NA
NA
NA
Off
Power
only
Power
only
Disable
d
Disabled
Disable
d
Disable
d
Disable
d
On
USB4/
DP/
USB
DP
By
system
setup
DP/HDMI
DP
Disable
d
Disable
d
2
On
On
NA
NA
Off
DP
DP
Disable
d
DP/HDMI
DP
Disable
d
Disable
d
On
USB4/
TBT/
DP/
USB
DP
By
system
setup
DP/HDMI
DP
Disable
d
Disable
d
3
On
Off
On
Off
Off
USB4/
TBT/
DP/
USB
USB4/
TBT/
DP/
USB
Enabled DP/HDMI
DP/
USB
USB3/
USB2
USB3/
USB2
On
USB4/
TBT/
DP/
USB
USB4/
TBT/
DP/
USB
By
system
setup
DP/HDMI
DP/
USB
USB3/
USB2
USB3/
USB2
4a
On
Off
Off
Off
Off
USB4/
TBT/
DP/
USB
USB4/
TBT/
DP/
USB
Enabled DP/HDMI
DP/
USB
USB3/
USB2
USB3/
USB2
On
USB4/
TBT/
DP/
USB
USB4/
TBT/
DP/
USB
By
system
setup
DP/HDMI
DP/
USB
USB3/
USB2
USB3/
USB2
4b
On
Off
On
On
Off
USB4/
TBT/
DP/
USB
USB4/
TBT/
DP/
USB
Enabled DP/HDMI
DP/
USB
USB3/
USB2
USB3/
USB2
On
USB4/
TBT/
DP/
USB
USB4/
TBT/
DP/
USB
By
system
setup
DP/HDMI
DP/
USB
USB3/
USB2
USB3/
USB2
NOTE:
PCIe tunneling is disabled so downstream PCIe devices won't be functional, no native Thunderbolt3 devices will be
active.
NOTE:
With Disable PCIe Tunneling Enabled, Dock Override shouldn't be allowed.
26
Technical specifications