Replacement HDD TO SDD

If it's an Inspiron 5520, take your pick - either will work with that system.

Since it's designed for a 9.5 mm hard drive, and the SSD will be 7 mm or slimmer, you may also need a spacer to allow the drive to connect to the system board:

https://www.connection.com/product/edge-7mm-to-9.5mm-solid-state-drive-spacer-adapter-for-2.5-drives/pe247270/31499932

Welcome to the Dell Community @Hasan.Hussein 

Are you asking which drive is better???

Because the read/write speed of both is about the same.

Or are you asking is there a faster one that is compatible with your laptop???

Best regards,

U2

1- PYN  is :-  Hardware Interface SATA 6.0 Gb/s

2- Kingston is :- Hardware Interface SATA 3.0 Gb/s

What does this mean and which is better ?

Hi 

thank you for replying

I ask for the faster one that is compatible with my laptop Because of both of them are almost the same price

But there is a difference in Hardware Interface

KINGSTON :- SATA 3.0 Gb/s

PYN            :- SATA 6.0 Gb/s

Sorry, I typed the wrong model

My model is Dell Inspiron 15R 5520

Not Inspiron 15R 5220 

Best regards

@Hasan.Hussein 

Now I see it.

Then the PNY would be best.

Regards,

U2

@Hasan.Hussein 

The PNY is still the best.

I have a few and tested them for you.

Compare the AVG/ACT R/W time.

Compare the "Time Spent" to complete 240GB.

The PNY is twice+ the speed of the Kingston.

Regards,

U2