Unknown port on the back of my motherboard

[ecavicc]

Hello, today I was disassembling my Pavilion 15-p258nl because I wanted to get rid of some dust, and on the back of the motherboard I found an unused port. It is smaller than a PCIe mini, and has what looks like a hole for a scrue to keep a card in place, like the system used to install M.2 SSDs on more modern PCs. Does anyone know what it's for?Unknown portHole for the screwThe actual port

[WAWood]

@ecavicc

It clearly looks like an M.2 NVMe slot.

[iomare · Accepted solution]

Hi,

That is an M2 SATA3 port where an M2 SATA SSD can be installed, as you can see on page 3 and 78 of service manual for your model:

http://h10032.www1.hp.com/ctg/Manual/c04511833

It is not that old!!

Hope it helps,

David

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[Huffer]

Its an M.2 slot but not NVME....will only support a SATA type M.2 disk. 2280 form factor like the Samsung Evo 860 or similar.

Even though the slot has 2 chambers, M.2 disks with three prongs (B + M keyed) will fit in the slot. 

This is the kind of M.2 you need