Thanks Peter, Will try that now. Graham Peter Moreton wrote: Graham, Figure 8, Page 17, of the FT245 data sheet has the circuit mod that you need for the device to go into sleep mode when not connected to the USB. Regards, Peter Moreton --------------------------------- Want to chat instantly with your online friends? Get the FREE Yahoo!Messenger -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body