USB class 0x3c — I3C
Class code 0x3c marks a device or interface as I3C. Operating systems read this value from the descriptor and bind a generic class driver, which is why most i3c hardware works without a vendor driver even when the VID:PID pair is unrecognised.
How it appears on your system
$ lsusb -v
bInterfaceClass 60 I3CWindows exposes the same value in the compatible IDs list as USB\Class_3C, extended with &SubClass_xx&Prot_xx for the subclass and protocol below.
Looking up a specific device instead? Search by VID:PID or browse the vendor directory.