Setup guide
Pro Tools|HD Setup Guide16
If you are connecting both 192 I/O (or 
192 Digital I/O) and 96 I/O audio interfaces to 
your system, connect the 192 I/O (or 
192 Digital I/O) to your HD Core (for PCI) card, 
followed by any additional 192 I/O (or 
192 Digital I/O) interfaces connected to subse-
quent cards. Then connect 96 I/O interfaces to 
subsequent cards, or to other interfaces, then 
connect 96i I/O interfaces.
You can also connect a single Pro Tools|HD in-
terface to each Pro Tools|HD card in your system 
using the provided DigiLink cables. (However, 
there is no advantage to this configuration over 
daisy-chaining interfaces.)
Connecting Loop Sync
If you are using two or more Pro Tools|HD audio 
interfaces or a SYNC peripheral, Loop Sync must 
be connected to maintain proper clock among 
the devices.
To make Loop Sync connections:
1 Connect the Loop Sync Out of each interface 
to the Loop Sync In of the next interface with 
the BNC cables included in your I/O packaging. 
2 Connect the Loop Sync Out of the last inter-
face to the Loop Sync In of the primary interface 
or SYNC peripheral.
Connecting Legacy I/Os
Each 192 I/O, 192 Digital I/O, and 96 I/O can 
support 16 channels of audio to and from 
Digidesign Legacy I/Os. (The 96i I/O does not 
support Legacy I/O.) Legacy I/Os include the 
888|24 I/O™, 882|20 I/O™, 1622 I/O™, and the 
24-bit ADAT Bridge I/O™. 
To connect Digidesign Legacy I/Os:
1 Connect the “MIX card” end of the peripheral 
cable that came with your Legacy I/O (60-pin 
side) to the Legacy Port on the primary 
Pro Tools|HD audio interface. Connect the 
other end to the Computer Port on the Legacy 
I/O. 
2 Do one of the following: 
• Connect any additional Legacy I/Os in the 
same manner, to Pro Tools|HD audio inter-
faces connected directly to HD cards.
– or –
• If you are using a Y cable (Legacy 16-chan-
nel peripheral cable adapter), connect this 
to the Legacy port first, then connect the 
audio interface peripheral cables to Port A 
and Port B of the Y cable.
The original 888 I/O and 882 I/O interfaces 
are not supported with Pro Tools|HD.
The 96i I/O does not support Legacy I/O.










