Need help to get USB drivers into a generalized HDD for Win7 setup

Hi All.
I have "Generalized" a windows 7 HDD for transplant into my new system.
(Ryzen 7200, Gigabyte gaming 5 WiFi MB)
The HDD goes into WIN 7 setup and of course I have no USB for mouse and Keyboard.

Since I am not using an image, ISO or fresh disk install, how and where can I insert USB drivers
into the existing HDD.

I tried putting the HDD into the old computer and running the USB creator but it came back with no compatible hardware and stopped.
I have also tried all the XCHI ECHI and USB legacy suggestions in the BIOS with no luck.
Emailing Gigabyte was useless too.
I have no PS2 ports.

Any Help would be great as I am dead in the water at the mo and I reeeaaallly don't want windows 10

TIA.
Darren.

If I am not using an windows Image but rather a generalised HDD - how does DISM help?

Hey.
Would it be possible to get a few more instructions on these please.
I pointed DISM to the HDD and it wanted to restart my pc but I am a little unsure of it. The pc I am using now is win7x32. is that going to be ok? where does it get the USB drivers from?

The USB7ICE.... when I check add files and click the folder button, it opens explorer but there is no add button. How do I select the files to add??

Thanks for the help.

Man It feels so close but so far.

DISM++ keeps error-ing every time I point it to the driver folders from Gibayte for my MB.

I booted off the USB stick with your image ok and have mouse and keyboard but how does this help me with the setup on the HDD?

So while in bootX I ran DISM, pointed to the HDD,drivers, usb drivers and added from the the driverstore on the USB stick. It successfully imported the drivers but the HDD still boots with no USB.