I know the kit model NUC10i5FNH is still available which is quite similar however it uses SATA technology instead of PCIe.
Thanks for your help.
Thank you for posting on the Intel® communities.
We do not sell our products directly to end-users, so the product availability might vary depending on the resellers, I will highly recommend you to check with the Intel® Authorized Distributors and Approved Suppliers in order to find these or other Intel® NUC Kits.
Intel Customer Support Technician.