Complex sentence: OpenBSD has hotplugd (8) which triggers special scripts on attach or dettach of removable devices, so that user can easily add mounting of removable drives such as SD cards, USB DVD drives, external USB HDDs or thumb drives.
Split into simpler sentences: OpenBSD has hotplugd (8) which triggers special scripts on attach or dettach of removable devices. So user can easily add mounting of removable drives such as SD cards, USB DVD drives, external USB HDDs or thumb drives.