Lenovo ThinkPad Universal Thunderbolt 4 Dock User Manual

When the dock is connected to both your computer and ac power, this indicator shows the computer status:
LED status Computer status
Solid white On
Blinking white slowly (1 second on/off)
In sleep mode
Off Off or in hibernation mode
When the dock is updating firmware, this indicator shows the update status:
LED status Firmware update status
Blinking white rapidly (0.5 second on/off)
Updating
Off Completed
4 Universal Thunderbolt 4 Dock User Guide

Lenovo ThinkPad Universal Thunderbolt 4 Dock Specifications

General

Product Type	Docking Station
Docking Interface	Thunderbolt 4
Power Delivery	Up to 100W
Ethernet	Gigabit Ethernet
Ports	1x HDMI 2.1, 1x DisplayPort 1.4, 1 x Ethernet, 1 x 3.5mm audio combo jack
Dimensions	80 mm x 30 mm
Compatibility	Compatible with Thunderbolt 3 and 4, USB-C laptops