Leave all unticked if none apply.
Why we ask
Annex III lists "important" products: Class I (for example identity management, browsers, password managers, antimalware, VPNs, network management, SIEM, boot managers, PKI, network interfaces, operating systems, routers/modems/switches, security-function chips, smart-home assistants and security products, certain toys and wearables) and Class II (hypervisors and container runtimes; firewalls and intrusion detection/prevention; tamper-resistant processors and microcontrollers). Annex IV lists "critical" products. These get stricter conformity assessment; most other products can self-assess.