On 01/15/2014 01:37 PM, Paul_Koning at Dell.com wrote: The LA180 receive-only printer was, I think, a derivative of the LA36, not the LA120. The 1976 Peripheral handbook seems to support that. Note that there also was an LA35, a receive-only variant of the LA36. The difference is that the LA35 had a serial interface while the LA180 had a parallel (line printer style) interface. The LA180 has more in common with the LA120 than the LA36. There is also a serially-interfaced variant of the LA180, which has a serial-to-parallel (*NOT* "Centronics" parallel, for others reading this) converter board mounted internally. -Dave -- Dave McGuire, AK4HZ New Kensington, PA