Why is there a four pin connector on my HDD

[Zic]

I was wondering what this four pin connector is and do I need it
HDD
https://www.newegg.com/Product/Product.aspx?Item=N82E16822178994

Pic with four pin
https://s23.postimg.org/ea6w8kpm3/IMG_1576.jpg

Thanks

 

[LASERR00]

Its jumpers for HDD i think... that is default.

 

[Zic]

But do I need I is it vital

 

[LASERR00]

But do I need I is it vital

U dont need to do anything.... leave it as it is.