How to add an SSD to a ThinkPad T420 laptop?

Question

Iron

Good time!
I want to add an SSD to my T420. Google and foreign forums led me to 2 options:
1. Buy an UltraBay, throw out the DVD, insert this thing, and the current HDD into it (buy and install an SSD instead).
2. Use the WWAN slot, stick the SSD in there, but, apparently, in a slightly different format (plain mSATA, not M2).
As I understand it, people love the 2nd option (although it limits the SSD speed to SATA-II, but in reality there is no difference with SATA-III). This port is on the back of the laptop, you need to unscrew one screw. Here's what I got:

There is VERY little space, especially in thickness, just a few millimeters. Can you really put an SSD in here? It sticks into the port, which is at the bottom of the picture, and 2 connectors hanging at the top are out of business?
I would be grateful for a link to the model, so as not to buy something left. In a week I'm flying to hot countries, I have only one attempt)
Or spit on everything, buy a fairly large SSD (512), insert it instead of the current main one?

Answer 1

Norm is getting in. Google mSATA SSD
PS But in general, this is a slot for a PCI-E WiFi adapter, and the antennas are also connected. Will it definitely work?

Answer 2

It is doubtful that a drive in general will be started in this slot, and an SSD in particular, and it’s not a fact in terms of dimensions.
A guaranteed and easy way is to replace the disk or replace the drive, and you should choose from them.
What exactly to choose for you - if volume is important, put a disk instead of a drive, if volume is not so important - just change HDD to SSD.
And the HDD can be carried in an external box.

Answer 3

As if HERE for the doubters.
Bourgeois write that everything went fine when replacing msata SSD instead of 3g (WWAN) modem

Answer 4

I plugged msata into the T420, the BIOS is visible as a disk for possible loading of MT-64 (64GB), Win7 does not show it, and it is not visible in the disks, although after turning it on it wrote that ATA Channel 2 is activated.
Is it treated somehow?

Answer 5

I made my instructions for installing an SSD in Lenovo laptops without removing the native HDD. And I recorded a video about installing an SSD-shnik, I just have a Lenovo laptop. This method can also work with laptops from other manufacturers, the method is the same. Go ahead!) In Word and PDF, I threw it off (so as not to throw it on dubious file hosting services) to Yandex disk https://yadi.sk/d/XZt_fK-S0xxtUw and to the Mail.ru cloud https://cloud.mail.ru/public /5ivL/HXAqNvCX7