Looks like configuring the HD621 can be done via MConfig (only).
Does anybody know where to get from a cable off the shelf (amazon etc) to connect Meridian RS232 to a laptop?
I have the MConfig software installed.
Thanks.

G61RSL, DSP7200, DSP5200HC
Lumin D2
Akai GX-620, Teac A-3300SX, Nakamichi CR-4A, CR-2A
Oppo BDP-103
Sony PS-X600, Nagaoka MP-110, Denon DL-103R
NuPrime STA-9, Elac BS 63
PS Audio PP10