Looks like ECS still carries them. I dug the schematics up on here somewhere, as ECS has no instructions with it. I'll try to make heads or tails of it. The part that's missing from the instructions is the coding. I need the STD to OBD2 plug so I can try to connect to the X5. I can connect to my E36 328 through STD port, so I'm hoping I can get connected to the X as well.