I am having troubles with Prestigio Multipad PMP3370B. I enabled USB debuging in Settings, but when I plug in my device to a computer and start adb devices, it does not recognize it. Does anybody have any similar issues? I am using Windows 7. Where can I find Windows driver for that device?
You can find USB drivers for the Prestigio Multipad PMP3370B (aka Prestigio MultiPad 7.0 ULTRA) in the manufacturer website
Just click the download link for the .zip file corresponding to your model, as seen in the screenshot.
At the time of this answer, the file name is
PMP3370B_20121217_V1.0.8.zip, this file is ~224 MB size and it does contain USB drivers for Windows 2000/XP/Vista/7 (32-bit) and Windows Vista/7 (64-bit), besides firmware update image file, upgrade manuals (in English/Russian, 32/64-bit) and other tools. I can tell it because I downloaded it myself and looked inside.
I don't know where you can find drivers for your specific device; but for most devices (of different manufacturers), Koush's universal adb driver does a good job on Windows 7 and 8 as well. You can download them from the linked site, and find instructions there as well.