The DLV11-J: http://gunkies.org/wiki/DLV11-J_asynchronous_serial_line_interface is basically 4 DLV11's rolled into a single dual-width card; that's definitely an option for Mini-Unix (which apparently supports up to 4 simultaneous users). They are program compatible with the DHV11, so the driver should 'just work'. The boards are readily available on eBait; 'glitchworks' (of this parish) sells replacement cables (quite good, I have several). Another option for serial lines on QBUS machines are DZ11 and DH11 versions for QBUS. (The DZ11 is interrupt-per-character on output; the DH11 is DMA on output.) There are two generations of each: the DZV11 (quad-width) and DZQ11 (dual-width), and DHV11 (quad) and DHQ11 (dual). I think they are pretty much program compatible with their UNIBUS brethren, and should be easy to get running. The boards are easy to find on eBait, the breakout panels are somewhat rarer (although there sre some DH ohes up at the moment). Noel