New Research Machines finds

Couple of new Research Machines finds just turned up: A 380Z in great condition, with the added bonus that it came with all the manuals. Quick look inside shows it to be pretty stock, except that I was told it had some sort of silicon disk option fitted. It does look to have a memory-type board hooked up to the bus that I wasn't expecting. Currently drying out prior to strip-down and checking as it had to overnight in the car... An RM NB300 laptop. Bet there aren't many of those about (I confess to not even knowing that RM made a laptop until the guy I got the 380Z from suddenly remembered that he had it!). Looks to be fairly standard stuff inside - Conner crap-o-matic 40MB IDE drive, 386 cpu, 4MB RAM etc. but probably a quite nice spec for the time. The internal keyboard cable (one of those flat ribbons) is snapped - anyone know of a UK source for them? Othwise I'll just have to keep an eye out for replacements in broken laptops... Oh, I also got various bits of software for both machines - system disks, Windows 1.0 for the laptop etc. cheers Jules