DIOCard Protools HD (tm) is compatible with Protools HD (tm systems and allows for 8X192 ADDA to replace functionally a Digidesign HD Interface Box. Up to two such external units can be daisy chained and connected to one computer card. This card installs in one of 2 slots on 8X192 ADDA. This card will be available for shipping on Jan 1st, 2006 Protools HD (tm) is a trademark of Digidesign/Avid