Frequently asked questions
1.
Fans not working, abnormal, or loud fan noise, overheating:
Fans that continue to spin quickly and make abnormally loud noises might indicate a problem. Common causes for fans not
working, abnormal, or loud fan noise, overheating:
●
Fans or air vents that are obstructed
●
Dust accumulation on vents or fans
●
Not enough ventilation
●
Physical damage
●
Out-of-date BIOS and device drivers
2.
Fan noise heard when the AC adapter is plugged into the dock:
●
When plugging in the AC adapter and powering on the docking station, the fan turns on for sometime and subsequently
powers down. This is by design and the docking stations is working as expected.
3.
What is the charging station feature?
●
The Dell Thunderbolt Dock WD22TB4 can charge your phone or other USB powered devices even without being
connected to the system. However, the AC adapter must be connected to the docking stations for this to work.
4.
Why am I asked to approve Thunderbolt Devices after the Windows logon and what should I do?
●
This is for Thunderbolt security. You are asked to approve a Thunderbolt device because the Thunderbolt Security
level on your unit is set to “User Authorization” or “Secure Connect” in BIOS Setup. You will not see this page if the
Thunderbolt Security level on your system is set to “No Security” or “DisplayPort Only”. Also, if you checked “Enable
Thunderbolt Boot Support” in the BIOS Setup and power-on the system with the WD22TB4 dock attached, you will not
see this page because the Security level is overridden to “No Security” in this case. When you are asked to approve
a Thunderbolt device, you may select “Always Connect” if you do not have any security concerns to always allow the
Thunderbolt device connection to your system. Or you may select “Connect Only Once” or “Do Not Connect” if you do
have concerns.
5.
Why does the hardware installation window show up when I plug in a USB device to the docking stations ports?
●
When a new device is plugged in, the USB hub driver notifies the Plug and Play (PnP) manager that a new device was
detected. The PnP manager queries the hub driver for all of the device's hardware IDs and then notifies the Windows OS
that a new device needs to be installed. In this scenario, the user will see a hardware installation window.
6.
Why do the peripheral devices connected to the dock station become unresponsive after recovering from a power
loss?
●
The docking station is designed to operate on AC power only and it does not support system power source back
(powered by system Type-C port). A power loss event will disconnect all devices connected to the dock . Even when you
restore the AC power, the dock may still not function properly because the dock still needs to negotiate proper power
contract with the system's Type-C port and establish a system EC-to-dock-EC connection.
●
Disconnect and reconnect the AC adapter from the back of the docking station to fix this issue.
7.
Entering the BIOS setup using F2 or F12 does not work at POST from an external keyboard attached to the dock.
It boots to the operating system and the keyboard and mouse only work after the operating system boots.
●
To enable pre-boot setup options using F2 and F12 from the dock, you must enable boot support for thunderbolt devices
and must set fast boot to
Enabled
or
Auto Enabled
in the BIOS.
11
Frequently asked questions
33
