n2ri...
you do know you can edit a post if you want to add something to your original post, yes?
rather than making multiple posts in a row.. just edit the first one.. please.
there should be a version number on the board itself. look for the board name - the version number is usually with that - either next to it, or under it. (Ver ## or Rev ##)
In the above picture, it looks like it should be in the lower left corner near the X axis plug. the image is not clear enough to actually read the version, however.
looking at the older version page (https://reprap.org/wiki/Sanguinololu_0.6) the stepper drivers are not soldered directly - it also has the removable stepper drivers...
For what it is worth.. this is NOT the v0.6 or older.. that subset had 4 pin molex connectors for a computer style psu & hard drive power plug (see the circled bits in the image below).. the OP's board has no such connectors, therefore it has to be a version 0.7 or newer.. i would assume yours is also
I understand if you, or others, are not comfortable with soldering pins for a fan to the board, but in truth, it really is not that difficult to do with the right tools.
If you do not have the right tools, then it is probably best that you do not attempt such a thing.
SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1