Does my ONX-610/620/630 have D3.0 or D3.1 hardware?
Knowledge Base - FAQ
Does my ONX-610/620/630 have DOCSIS 3.0 or 3.1 hardware?
To find out, turn on the ONX-610/620/630 and go to System Settings -> Hardware Options -> DOCSIS 3.0 or DOCSIS 3.1 Hardware Capable.
If you do not have a Hardware Options menu in System Settings, go to System Settings -> Hardware and Software Revisions -> see the DOCSIS BCM if it is 3385 then it has DOCSIS 3.0 hardware and if it is 3390 then it has DOCSIS 3.1 hardware.