A Thunderbolt docking station from Thunderbolt 2 docking stations to Thunderbolt 4 docks is used to expand a computer's connectivity options by providing multiple ports for data transfer, charging, and connecting to external displays. It allows users to connect various peripherals and devices through a single Thunderbolt port, enhancing productivity and creating a more versatile workspace. 

The main difference lies in their capabilities and data transfer speeds. Thunderbolt docking stations offer faster data transfer rates, support higher resolution displays, and can daisy-chain multiple devices. On the other hand, USB-C docking stations provide more popular connectivity options and are relatively slower in data transfer and display capabilities. However, both have their own features. You can choose them based on your specific needs and device compatibility.

Yes, you can plug a Thunderbolt dock into a USB-C port. Thunderbolt 3 docks are designed to be backward compatible with USB-C ports, so you can use a Thunderbolt dock with a USB C to DisplayPort adapter or other USB-C devices. However, keep in mind that the functionality may be limited to the capabilities of the USB-C port, and you won't get the full Thunderbolt speeds and features unless the port supports Thunderbolt technology. 

Thunderbolt docking station boasts high data transfer speeds and versatile connectivity options. With the Thunderbolt technology, you can enjoy lightning-fast data transfer of up to 40Gbps, multiple high-resolution displays, and the ability to connect various peripherals through a single cable. This ensures a seamless and efficient way to expand your laptop's capabilities and turn it into a powerful workstation with ease. 

No, Thunderbolt does not always support charging. While Thunderbolt ports are designed to support delivering power, the ability to charge devices through Thunderbolt also depends on the specific device like your computer, and its compatibility with the Thunderbolt charging standard. Some Thunderbolt devices, such as Anker 577 Thunderbolt Docking Station featuring unparalleled 85W and 15W Thunderbolt 3 charging options, may support charging laptops, but not all Thunderbolt devices have this capability.