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Port disablement
Port Disablement is a system feature that enables user to selectively disable DisplayPort or Thunderbolt protocols over USB
Type-C ports.
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The feature is offered through BIOS and requires user to boot to BIOS Setup Menu to activate/deactivate the feature.
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Port Disablement is handled at low level and cannot be deactivated by operating system.
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The Port Disablement is extended to Dell Docks by importing system configuration and applying the settings locally.
New Gen MFDP (Multi-Function Display Port) Systems
New generation of systems with MFDP Type-C ports offers following configuration options in BIOS:
1. Enable/Disable External USB Port to enable/disable USB protocol over USB Type-A and Type-C ports.
2. Enable/Disable Integrated NIC (this setting will be imported by Dock).
The table below illustrates how those settings will affect functionality of the Dock:
Table 8. New Gen MFDP (Multi-Function Display Port) Systems
MFDP system
Docked system
configuration
Dell WD22TB4 Dock
BIOS setup options
Thunde
rbolt
Module
Base
Case
Enable
externa
l USB
ports
Disable
USB4 PCIe
Tunneling
Dock
Overrid
e
System
Dock
port
power
delivery
modes
Thunde
rbolt
port
LAN
Video ports
Type-C
MFDP
port
Type-C
USB
port
Type-A
USB
port
1
Off
NA
Off
Power
only
Power
only
Disabled
Disabled
Disabled Disabled Disabled
On
USB4/
DP/USB
DP
By
system
setup
DP/HDMI
DP
Disabled Disabled
2
On
Off
Off
USB4/
DP/USB
USB4/
DP/USB
Enabled
DP/HDMI
DP/USB USB3/
USB2
USB3/
USB2
On
USB4/
DP/USB
USB4/
DP/USB
By
system
setup
DP/HDMI
DP/USB USB3/
USB2
USB3/
USB2
On
Off
USB4/
DP/USB
USB4/
DP/USB
Enabled
DP/HDMI
DP/USB USB3/
USB2
USB3/
USB2
On
USB4/
DP/USB
USB4/
DP/USB
By
system
setup
DP/HDMI
DP/USB USB3/
USB2
USB3/
USB2
New Gen TBT (Thunderbolt) Systems
New generation of systems with Thunderbolt ports offers following configuration options in BIOS:
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/Disable Integrated NIC (this setting will be imported by Dock).
The table below illustrates how those settings will affect functionality of the Dock:
Technical specifications
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