Here is a very nice upgrade for your Dell Latitude 5220m. If your like me you have one of these that you work on daily, I got this drive and put Windows 8 on it and it works great.
I got it for under 80.00 from amazon and (See above). The E5220m doesn’t support anything higher than SATA II so your wasting your money on getting a SATA III drive with this laptop.
For your reference the chipset supports – SATA Version — SATA 2 – 3Gb/s ONLY. That is why this drive is ideal.