The 2.5.2 driver?
 
Go to Downloads / 2i4 new generation:
 
As below, "click here" will take you to the 2.5.2 driver for the 1st generation Scarlett.
 
Note: Larry may have a different route but that is how I got to this...
 
I've asked Focusrite support which one should I use...
 
==============================
 
Focusrite USB ASIO Driver - 2nd Gen Scarletts Only - Windows (Please expand details below) 
06/08/2016 
Click here for more details:

Windows Only

Focusrite USB ASIO driver version 4.12.0 - For use with Scarlett 2nd Gen devices ONLY (serial prefix - Vxxxxxxxxxxxx or Wxxxxxxxxxxxx).
If you have purchased a 1st Gen Scarlett (serial prefix Sxxxxxxxxxxxx or Txxxxxxxxxxxx), please download and install Focusrite USB 2.0 driver HERE.

Seems pretty strange that it isn't on the 1st gen page though.

Man I agree, through the Looking Glass darkly...

RSMCGUITAR
Hey Larry where did you get that driver in the first place? I have the 2.5.1 Driver and the 3.2.2 Driver from the beta site. Just wondering when it's dated for/how old it is. Thanks
 

Right from my Focusrite page RSMC

Sorry RobbyK...I completely missed that your interface was Second Generation.
Complete oversight on my part...my bad...
 

cclarry
Sorry RobbyK...I completely missed that your interface was Second Generation.
Complete oversight on my part...my bad...
 

No Larry, mine is 1st generation, I had been snooping all over the focusrite sight looking for info tho.
 
No bad at all, not now, not ever :)

PROBLEM SOLVED! Thank you everyone for all of your help. The solution was in fact, USB 2.0 Driver. 

That's great news!
 
 These forum guys are really good at their help !

YellaVeL.rk
PROBLEM SOLVED! Thank you everyone for all of your help. The solution was in fact, USB 2.0 Driver. 

Excellent news!
 
Now can you elaborate on the solution ("USB 2.0 driver")?  I'm looking at 2nd gen driver downloads and only see the one driver available.  I see a link for the USB 2.0 driver, but it states it's for 1st gen Scarletts.
 
Did you realize yours was 1st gen, or did you install the driver on your 2nd gen unit anyway?
 
I'm considering jumping on the Scarlett Solo(2nd gen) deal, but want to make sure I'm not getting a doorstop.

JonD
 
When you go to Downloads (link on top of the main page), select USB audio interfaces in the drop down box, and then you will see a link for either Scarlett 2i4 or Scarlett 2i4 (new generation). Select the link for New Generation. Once on this page, you'll see the header "Focusrite USB ASIO Driver - 2nd Gen Scarletts Only - Windows".
 
Hope this helps.