Will this cable (USB-C to USB Adaptor) work with Thunderbolt 4 ports?

The USB-C (Thunderbolt) ports on your Mac are "Swiss Army knife" type ports with "blades" for

• USB
• DisplayPort
• Thunderbolt

They adapt to the needs of whatever device is plugged in.

I'm pretty sure that the adapter in question translates between USB-C (USB) and USB-A (USB). It doesn't speak, or care about, Thunderbolt. It just wants the USB signals that are also available on your Mac's "Thunderbolt" ports.

Triman140 wrote:

Like the ones on 14" M3 Pro Macbook. The online description only indicates compatible with Thunderbolt 3.

It will work if you are trying to connect an old USB device yes

About the Apple USB-C to USB Adapter - Apple Support