@1461trean
What is your Laptop 15- EC1XXX ? For example
HP Pavilion Gaming Laptop 15-ec1073dx
Your machine should be very close and yes, depending on what it has now you can add 2.5" HDD/SSD or M.2 NVMe SSD drive to your machine.
You are asking for 2.5" drive, looks like your machine has M.2 SSD already therefore you can add 2.5" drive but you need
Hard drive connector/cable part # L72698-001
Part is N/A from HP Part store nor other online stores, please try
https://www.ebay.com.au/itm/L72698-001-GENUINE-HP-HD-CADDY-W-CONNECTOR-15-EC-15-EC0013DX-CD312-/2936...
Regards.
BH***
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