Quectel RM520N-GL bus speeds?

The modem .pdf shows the Quectel RM520N-GL bus spec as:

  • Interface:
  • USB 2.0 × 1
  • USB 3.0/3.1 × 1
  • PCIe 3.0 × 1

IF running on a USB 2.0 × 1 link, will the modem throughput be throttled, or diminished?

Dear @buggz
Yes, it will be affected.