Which are the part numbers for the PCIE slot for M138 Modem?

Hello there!

Thanks for reaching out! Upon checking, the two options listed in the manual will work.

If the part doesn't have models, you can request them by clicking on the "Request Now" button on the part page and ticking the option Get symbol & footprint within 24h, or click the "Notify me" button to get notified once the model is created.

Hope this helps!