Appropriate M.2 SSD for my Elitebook 850 G1

[George Mulligan]

Searching online suggests I need a SATA drive, but the interface itself looks to be PCIe. It has one notch with 4 pins on one side and many on the other (I cannot figure out how to attach a pic).

I know it needs to be a 42mm card.

Can anyone suggest a card with the correct interface and the maximum capacity?

This is to be used as a secondary drive.

 

[PizzaTheHutt]

I presume you mean something like this? http://goo.gl/4M5oEe