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The Caldigit Thunderbolt 4 / USB4 Element Hub was designed to link up recent Mac's or Windows notebook PC's that support Thunderbolt 4 / 3 or USB Type-C technologies to provide a total of eight USB connectivity ports comprising four Thunderbolt 4 based USB-C (40 Gb/s) ports and four USB 3.2 Gen 2 (10 Gb/s) Type-A ports. 

The Thunderbolt 4 based USB-C ports also support USB4 (up to 20 Gb/s) speeds as well as connect to one 5K, 6K or 8K display or two 4K displays or even docks or hubs with up to four Thunderbolt 4 ports.

One side of the Caldigit Thunderbolt 4 / USB4 Element Hub has a Thunderbolt 4 based USB-C upstream port that is used to connect to the Thunderbolt or USB Type-C based computer for USB Power Delivery 3.0 charging up to 60 watts and DisplayPort 1.4 video.

The three Thunderbolt 4 based USB-C downstream ports next to the DC power inlet on the back of the hub are used to connect to devices or drives that support Thunderbolt or USB Type-C as well as provide up to 15W of power.

We'll see what's inside the Caldigit Thunderbolt 4 / USB4 Element Hub box after purchase.

Caldigit shares a lot of technical detail on the product on the packaging. 

The Caldigit Thunderbolt 4 / USB4 Element Hub is accompanied with accessories which include a conventional AC power adapter and power cord as well as a separate Thunderbolt 4 enabled USB Type-C cable.

The AC adapter supports 150 watts for charging the hub when plugged in to the hub's DC In port and connected to AC power.

The hub's USB Type-A ports allow any USB data peripherals like USB storage drives to be connected which should be accessible by the PC.