May 12, 2011 · M54, pin 27 of X60004 DME connector, 40 pin, with a blue/black wire if installed. S54, pin 4 of X60002 24 pin connector, the existing wire, if there, is blue/black. Source: BMW Wiring Diagram System (WDS)
These are pinouts for a Radeon HD7970M which is a MXM 3.0b card and was an option for my Clevo P150EM back in 2012. Just please bare in mind that these pinouts are for the card itself not the MXM...
The cable I ordered has a pinout as shown, which we can see matches the diagram above (20 & 17 bridged). 16-pin OBD 2 connector ... X60004 Pinout. 36. IO - CAN bus high.
X60004, pin no. 29 To water valve Y4, connector X85, pin no. 1. To water valve Y4, connector X85, pin no. 2. To outside temp. sensor B21 To outside temp. sensor B21, connector X770, pin no. 1 To outside temp. sensor B21, connector X770, pin no. 2 Behind the glove box to relay carrier Behind the glove box to joint connector X219