The Montana from Frontier Design is an expansion card that doubles the number of ADAT optical ports and provide additional synchronization capabilities when paired with the Dakota PCI card. The card can be installed in either a PCI or ISA slot.
The Montana adds two more ADAT optical inputs and outputs for sixteen additional independent channels, an RCA connector for either video sync input or word clock input and a parallel internal connector for use with digital video boards. ADAT sync output is available on a standard 9-pin connector. When Montana is installed, the Dakota control panel automatically accommodates Montana's expansion features. No additional drivers are needed to use Montana's audio ports and sync functions.
The card's optical ports can also be routed to and from Dakota's two-channel S/PDIF receiver/transmitter. With SoDA technology (SMPTE on Digital Audio,) any audio input can record SMPTE timecode and any audio output can play back SMPTE timecode without using dedicated SMPTE I/O ports.