(27 Feb 2020, 5:45 pm)deanmachine wrote 63 plate and older have the old system. TVTs, Red Arrows, Fab 56s, Drifters, Connections 4s and Citylink 58s. I think. Obviously used to be Cobalt Clippers too before they were refurbished, think Quaylinks were upgraded to a newer system too.
Correct - Fab56s have been upgraded since, as have 5389, 5390, 6043, 6044 and 6065.
No easy way of identifying other than when they first boot up - one's a Windows XP, the other is a blue screen.