Hi,
The service manual mentions M2 slot and support for M2 SATA3 and much faster M2 PCIe NVMe SSDs.
On page 47 of service manual you can see the steps to install drive:
http://h10032.www1.hp.com/ctg/Manual/c06147959
Before buying drive you should check if the slot is present as sometimes on notebooks that did not come with M2 SSD, the physical slot is missing. On page 39 of service manual you can see how to remove bottom cover:
m2 slot
hope it helps,
David
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