The product page for the Montech MKey TKL could be better organized, I almost missed out on the software drivers initially. Scroll all the way down here past the specifications table and you will see a large "Download" element that provides access to the installer, which is named "MKeyTKLcore" regardless of the copy-paste job done in the table above that says others. The installer is 31 MB in size and there is no version number listed—it is 1.0.0.0 as per Windows. The installation itself is simple enough and the "MCORE87" mentioned could perhaps be the OEM unit used. The installation is simple enough and the final install size is also 31 MB.
The drivers only support the MKey TKL and thus it's not surprising that the program is light on system resources. That said, it's quite lagging compared more mainstream offerings when it comes to the user experience. There is no maximize option and the drivers don't scale with monitor resolution or OS scaling either. So it was a small window on my screen that spanned 1500x960 pixels. A lot of tables and pop-up cues also go past the borders of the open window and some buttons don't give you any indication that they have done something until you actually test for it. There is also plenty of empty space at the top where we usually see the menu items listed and this is even before we get to the grammar errors strewn around.
The good news is the various features available on the software drivers work bug-free and mostly as expected. The video above goes over the options available, be it checking for any firmware update, creating/editing software profiles, customizing the per-key lighting available here, key assignment, macro recording, or changing the USB polling rate. I did appreciate that the on-screen virtual keyboard depicted the various lighting effects wherever possible and we are able to easily customize the LEDs using any of the 16.8 M colors on offer.