Can anyone tell me what voltage and current is available on the serial port of a ThinkPad 755CD? In addition, what pins? Tom Thomas A. Gauldin Here's to the land of the longleaf pine, Raleigh, NC The summerland where the sun doth shine, BSRB45A on Prodigy Where the weak grow strong and the strong grow great, FAX (919) 676-1404 Here's to Downhome, the Old North State.