No that's great - but the reply to the OP said "Hi
@adski if your laptop only comes with M.2 SSD, it doesn't support installing second hard disk. Thank you!" - I have an A509JA with SSD so had assumed that the answer given applied to my A509JA as it had to the OPs A509JA?
If my one does support the second drive then that's great, I'll just need to pursue getting the correct connector cable and find where on the motherboard I need to connect it up!
Thanks