Running them simultaneously, I saw about 3,800 MB/s combined throughput, which is right in line with the 32Gbps PCIe data rate with Thunderbolt 4.
TUFF CALDIGIT USB 3 DRIVER WINDOWS 10 PRO
I tested speeds through the TB4 ports using a CalDigit Tuff nano, OWC Envoy Pro Elektron, and OWC Envoy Pro FX high-performance SSDs. It's also removable, helping prevent damage that affects the entire hub. The included host cable measures 31.5 inches (0.8 meters), easily reaching around to either side of a laptop from the Element's desktop setup. On the same side as the Thunderbolt 4 ports is a barrel charging port for the chunky 150W AC adapter. On one edge are four USB-A 3.2 (Gen 2) with up to 10Gbps speed and 7.5W power, and on the other edge are three downstream Thunderbolt 4 ports with 40Gbps speed and 18W power. The Element adds seven total ports, along with a single Thunderbolt 4 port to run back to the host with up to 60W charging power. Just pop them on once you've figured out a semi-permanent setup. Removable rubber feet are included to help with slipping. It also means you can choose what ports are facing forward just flip the hub.
This alleviates the issue of only having a Thunderbolt 4 port on one side or the other of the host laptop. Why reversible? The Thunderbolt 4 host port is located on the end of the hub, giving you the option as to which edge faces forward. The Element is reversible, with a CalDigit logo on both broad sides.
The CalDigit Element Hub looks a lot like CalDigit's SOHO Dock, with solid aluminum shell and overall compact design.