How to tell the difference between the older, 80 pin Digidesign 13 slot...

How to tell the difference between the older, 80 pin Digidesign 13 slot Expansion Chassis and the newer 68 pin Digidesign 13 slot Expansion Chassis (both manufactured by Magma).

* 80 PIN CHASSIS *Facing the front, the power supply is on the right and the controller card is on the left. Slots are numbered 4 to 16, left to right. Serial number is lower than NB0600100C.* 68 PIN CHASSIS *Facing the front, the power supply is on the right as well as the controller card. Slots are arranged in two busses, slots 4-10 and slots 4-9 respectively, right to left. Serial number is NB0600100C or higher.

Other Popular Articles:
• " TDM error -7350 while trying to create mix channel " when launching Logic Audio ( using DAE 5.0 ).
• Plasma meters are very jerky in Pro Tools. A new session with no plug-ins does not exhibit this behavior.
• Are Focusrite outboard gear products wired pin 2 "hot" or pin 3 "hot"?
• What do the terms " Zero degrees " and " 180 degrees " refer to in my Focusrite documentation, in regards to the pinout wiring?
• What are the rules for Track Transfer 2.11 concerning session bit depths, file formats, video track transfers and transfer destinations?