Milnor Numbering Format
Each plug has a designation. Plugs that connect from one cabinet to another typically had 3-5 letters like WCL or WCCD. Plugs that land on a board like an I/O board or processor have a designation that starts with MTA the has the number of the plug, 32. When you are looking for WCL, you are looking for a plug that connects to another plug. When you are looking for MTA4, you are looking for a plug on a board.
Each of these plug designations is typically followed by a dash and a pin number. MTA32-2 is pin two on plug MTA32. WCL-9 is pin nine on plug WCL.
Markings Found on Plugs
| The Molex plug below has a set of raised ridges to denote pin 1, 2, and 3. This continues along the row and then starts over again on the next row. |  |
| The AMP plug has a raised edge around pin 1. The numbers are also labeled on this side as well. |  |
| These plugs are typically found on processors and have markings on the plug face. |  |
