Mine only came with one and installed on my vista Machine. I would contact Plustek on Monday and ask. Valerie On Jun 13, 2010, at 12:53 PM, Monica Svopa wrote: > Hello. I had a questions about the discs to install the opticbook 3600. My > husband and I were going to install it onto the vista machine. I have a disc > that says 1 of 2. Does anyone know what the second disc contains on it. > May I borrow it from someone or would someone know how I could get another > disc? Thanks in advance for your help. > > Sincerely, > > Monica Svopa >