Help With Hard Drive Installation

[daignalexander]

Hi everyone! I am currently in the process of trying to install a 2TB Seagate Barracuda I just purchased, but I can't seem to find the Sata Data cable to plug into the back of the hard drive. Am I just not looking in the right place or do I need to buy one separately? Attached is a quick video I took of the PC.

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[kerberos_20]

u will need to buy it seperately if u dont have any spare