Digidesign Adat Bridge 2002 Black Rack rash but works fine

Hi this unit were made for the Older Protools 6.41 TDM Mix Systems as they have the Larger  Legacy Ports on them . This unit has one larger rack hol;e that was like this when I got it . Does not effect performance and if you use a rack screw with a black washer you wiull never see. I am doing this for my Friends in Quebec and New York as they seem to be___________ . he he 

Here is a link to the manual from Avid.

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The unit is working fine. See below from a description I borrowed as it was so well written

The 24-Bit ADAT Bridge I/O supports any device carrying the Alesis "ADAT Optical" logo, including I/O expansion cards for some popular digital mixing consoles such as the Yamaha 02R, Spirit, Ramsa, and others. This makes it an ideal solution for transferring audio back and forth between Pro Tools and ADAT optical-compatible consoles. With the 24-Bit ADAT Bridge I/O, you can enjoy full 24-bit resolution throughout the entire production process with 24-bit equipped digital consoles. The 24-Bit ADAT Bridge I/O features 16 channels of ADAT Optical Inputs and Outputs, separate AES/EBU and S/PDIF ports for mastering to DAT, and includes a pair of high-quality 24-bit analog outputs for monitoring your audio.

Technical specifications

Features Affordable integration of ADAT Optical Devices and Pro Tools
Works as the sole audio interface or secondary interface for Pro Tools systems
16 discrete channels of ADAT Optical Inputs/Outputs*
High-quality, 24-bit analog outputs for monitoring
Separate AES/EBU and S/PDIF ports for mastering to DAT
Support for third-party ADAT sync devices, including Alesis BRC