We understand that you want to know if the cable that came with the Intel® SSD 750 Series will work with the Intel® Optane™ SSD 900P Series.
We would like to inform you that the cable is fully compatible with the Intel® Optane™ SSD 900P Series.
For further information you can refer to the following article:
https://www.intel.com/content/www/us/en/support/articles/000025766/memory-and-storage.html Frequently Asked Questions for Intel® Optane™ SSD 900P Series - Intel.com
If you have further questions then feel free to contact us again.