Citat s neta: "Some enclosures have a 2TiB limit, irrespective of the partition type. This is because the USB-SATA bridge IC's firmware can only address 32-bit LBAs. The firmware in newer enclosures can address the full 48 bits.
That said, if an enclosure supports 3TB (48-bit LBA), then it should also support 4TB and beyond."