Yamaha AX16-AT Owner's Manual page 7

C
IO-B connector
This connector connects to the IO-B connector on the DS2416 using the sup-
plied 20-pin connection cable.
D
THRU-A connector
This connector connects to the first AX44 Audio Expansion Unit using the
20-pin connection cable supplied with the AX44.
E
THRU-B connector
This connector connects to the second AX44 Audio Expansion Unit using the
20-pin connection cable supplied with the AX44.
Controls & Connections
AX16-AT—Owner's Manual
7