I’m using a Tascam DM4800 with PTHD11 into an Early 2008 Mac Pro 3,1 for many many years with no issues thankfully. My computer is speced to the max and the Tascam has the meter bridge, computer card and 3 analogue cards but whatever way I look at it the system is old. The OS is Mavericks and I haven’t updated because everything works as is without issues. How long realistically can this system last though. The desk and computer are at least 13 years old and when the system does die what could one replace the lot with?