From a post on the ColADAM List by Dr. D (Rich Drushel)

Moving to the HD system...this was my grand all-in-one:  20 MB MFM
HD (mounted internally, side power jack, front-panel activity LED), 256K
XRAM, MIB2 card with 2 serial ports and parallel port (routed to 2 external
DB9 and 1 DB25 connector), Orphanware serial card mounted internally (routed
to external DB25 connector, external baseport select switches, and ribbon
cable routed to the sideport to accept 1 additional sideport device), 2400
baud pocket modem (mounted internally, attached to MI serial port #1 with
external phone jack), internal audio amp/speaker (mounted in tape 1 bay
using dummy DDP frame assembly), and no-slot clock (I bet the 10-year
battery is dead).  There is probably some TWWMCA article describing it in
more detail.

