Hello Dimtar,
You have installed the correct package for scan functionality. The package in your link installs both the scan utility and drivers. After install and reboot the companion utility should ask if you want to install the scanner for USB or Network, the network portion is only if the device is connected with the wireless adapter, that wireless adapter was never made available, so our only option is USB.
Also on reboot windows should have assigned the scan driver a USB port. If this didn’t' happen it's possible you have a 3rd party firewall the is blocking that communication.
I would suggest the following.
1. turn off all firewalls, if windows then detects the printer after you turn it off and on, you'll need to contact the firewall vendor.
2. check the length of the USB cable; should be no longer than 15 feet and make sure it's a USB 2.0 cable.
3. Try a different USB port on the computer