The most recent version of OCuLink, OCuLink-2, supports up to 16 GB/s (PCIe 4.0 x8) while the maximum bandwidth of a USB 4 cable is 10GB/s.
The most recent version of OCuLink OCuLink-2 supports up to 16 GB/s (PCIe 40 x8) while the maximum bandwidth of a USB 4 cable is 10GB/s