Graham, You need an optacon 2 power supply for an optacon 2; don't use an optacon 1 power supply. Mary Emerson E-mail: maryemerson@xxxxxxxxxxxxx Skype name: mkemerson Podcast web site: http://www.emerson.libsyn.com Podcast feed: emerson.libsyn.com/rss To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.