Hi Joe:
Somewhere (possibly in relation to using 60950-1), I recall that ports for connection to SELV circuits were treated as being accessible even if the connector could not be reached by the accessibility probe. This suggests that the USB connector would be treated as an accessible part, even if it is recessed and guarded to make it inaccessible to the probe. Yes. USB is SELV. As such the manufacturer has no control over what may be connected to the USB port. The foreign device may be a SELV-only device and does not require any safeguards. The entire circuitry may be accessible. SELV always may be accessible. Best regards, Rich - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
