Internal HDD help

[guyferic]

Motherboard: Gigabyte GA-H170-D3H (rev. 1.0)
https://imgur.com/a/7Nbhe0z
I intended to add an Internal HDD(2TB) to my current setup but I have no idea what cables to buy. I only know about the SATA III cable(right angle type). I read that there's another power cable needed but no idea what's it call, checked newegg, is this the type that I need to look at?
https://www.newegg.com/global/sg-en/p/N82E16812119010?Description=sata%20power%20adapter&cm_re=sata_power_adapter-_-12-119-010-_-Product
I may need to buy a molex extension cable as it seems the power adapter is too short if connected to pic 4, is that ok?
another consideration and the simplest way might be to get either a docking station or external HDD.
anyone have any good trustable online PC/hardware shop to recommend to get all this things. TIA

 

[hafiz116]

Since you have a modular PSU, you should have the additional cables for SATA power that you can plug in. And yes a SATA data cable is what you will need. There is a chance if you can locate your additional PSU cables you may have a SATA cable in the box

 

[cscs3]

May need some screws to hold the disk too.