<ALSO EXTREME WARNING!! The standard power supply for a VT103 <is able to output ONLY 16 amps on the 5 volts and very little on the 12 vol this is a problem and if you pick the cards right a Q22 11/23 can be built but its tight for power. If the disk is in an external box power is less a problem. <While I definitely agree that the VT103 was a very interesting piece of <hardware, what I do not understand is why it was not extended - unless <DEC was so loath to admit that it could not add a hard drive at that point It's product code was MDS-11A, it was intended as a small devopment system for Falcon (KXT-11) card users. Also at that time KO made a point that that PCs were not a business to persue. there was a version that was Vt100 based and built for newspaper use. The system had 11/23 base and was MOP loaded from the host. The keyboard was NOT the stand VT100 one and had a lot more keys. There were due to space in the box and parts that would fit however many hacks (from DECs CSS, Computer special systems <for a price anything>) and external to DEC. Allison