One used Yamaha MY8-TD digital I/O card. Pulled from a working O2R96. No problems with it that I can tell. Sold as is. 

8-Channel TDIF-1 (TASCAM) Format I/O Card

Mini-YGDAI cards make it easy to add I/O in a wide variety of audio and network formats to Yamaha digital mixing consoles, processors, and power amps that are equipped with compatible card slots. Mini-YGDAI cards can give your system the most up-to-date capabilities for any application.

Features

24bit resolution, 8-in/8-out TDIF-1 (TASCAM) interface (4-in/4-out at 96kHz)

1x D-sub 25 pin connector for digital audio, 1x BNC connector for Word Clock out

Specifications

General Specifications

Channel Count 8IN / 8OUT

Format Tascam Digital Interface

Sampling frequency 44.1/48 kHz

Resolution 20 bit

Connector 1x D-sub 25 pin connector for digital audio

1x BNC connector for Word Clock out