Dell ThunderDock WD22TB4 - Manual (Page 27)

Legacy Thunderbolt systems
Legacy systems offer one extra option that was rarely used but made configuration very complex:
1. Enable/Disable Thunderbolt to activate Thunderbolt Controller and enable Thunderbolt protocol over USB Type-C port.
2. Enable/Disable External USB Port to enable USB protocol over USB Type-A and Type-C ports.
3. Enable Dell Docks - dynamic override to extend system settings to boundary of the dock (dock port connected to Dell Dock
was fully functional and Dock took care about handling dock port disablement locally).
4. Enable/Disable Integrated NIC (this setting will be imported by Dock).
The table below illustrates how those settings would affect functionality of the WD22TB4 Dock (for reference only, please
consult Dell Customer service for more details):
Table 10. Legacy Thunderbolt systems
TBT system Docked
system
configura
tion
Dell WD22TB4 Dock
BIOS setup options Thunderbolt Module,
Downstream port
Base
Case Extern
al USB Thunder
bolt Overri
de to
allow
Dell
dock System
Dock port
power
delivery
modes Type-
C
Thund
erbolt
port DP USB LAN Video
ports Type-
C
MFDP
port Type
A and
Type-
C USB
ports
1 On On N/A TBT/DP/
USB Workin
g Working Working By system
setup Enable
d DP/
USB Enable
d
2 On Off On TBT/DP/
USB No
functio
n Working Working By system
setup Enable
d DP/
USB Enable
d
3 Off On On TBT/DP/
USB Worki
ng Working No
function
By system
setup Enable
d DP
mode Disabl
ed
4 Off Off On TBT/DP/
USB No
functio
n Working No
function By system
setup Enable
d DP
mode Disable
d
5 On Off Off TBT/DP/
USB No
functio
n Working Working By system
setup Enable
d DP/
USB Enable
d
6 Off On Off TBT/DP/
USB Worki
ng Working No
function
By system
setup Enable
d DP
mode Disabl
ed
7 Off Off Off TBT/DP/
USB No
functio
n Working No
function Disabled Enable
d DP
mode Disable
d
LED Status Indicators
Power Adapter LED
Table 11. Power Adapter LED indicator
State LED Behavior
Power Adapter is plugged into wall socket Flash three times
Technical specifications 27