The Avid Pro Tools|HDX 16x16 System includes:

Pro Tools HD DAW software (Perpetual License, Including One Year Support Plan)

1x iLok USB Smart Key

1x Avid HDX PCIe card

1x HD I/O 16x16 Interface

12-foot DigiLink Mini cable for Pro Tools | HD Series interface connection

Pro Tools | HDX is the new generation of Pro Tools | HD system, providing more power, higher audio quality, and easier ways to record, edit, and mix the most demanding productions. Get more tracks, more headroom, and up to 5x more dedicated DSP power to tackle even the most massive music and post-production projects with the confidence that comes with guaranteed performance.

HD I/O 16x16 Analog
The ideal choice for music productions-get the maximum complement of analog inputs and outputs (can be customized by replacing a card, but not expanded).
High-quality analog I/O:

16 analog inputs (using DB25)

16 analog outputs (using DB25)

Additional digital I/O:

2 channels of AES/EBU I/O (supports 192 kHz singlewire)

8 channels of ADAT I/O (supports S/MUX II and IV)