Which size of HDD(2.5" or 3.5") may I install on my notebook?

[Yrys7]

Which size of HDD(2.5" or 3.5") may I install on my notebook hp pavilion gaming 15-ec1013ur?

[WAWood]

@Yrys7 

Laptop disk drives are all 2 1/2 inch.  The larger ones are only for desktops and towers.

[Paul_Tikkanen]

Hi, @Yrys7 

Most likely since your notebook came with a 256 GB M.2 SSD, none of the parts are there to add a 2.5" drive.

HP Pavilion - 15-ec1013ur Product Specifications | HP® Customer Support

So, before running out and buying a 2.5" drive, make sure the required parts to add it are there, or that you can find a place to buy them.  Many times the parts are impossible to find.

Below is the link to the service manual.

Chapter 3, page 19 has the parts needed to add a 2.5" drive.

Maintenance and Service Guide HP Pavilion Gaming 15 Laptop PC

(2) Hard drive brackets not available as spare part
(3) Hard drive connector/cable            L72698-001

It would be a whole lot easier and would also save battery power to just replace the 256 GB SSD with one having a larger storage capacity.