I chose a keyboard with a single-color backlight to replace the broken one. The previous non-name had a slightly purple very uniform illumination of characters. I fell for the brand, bought Razer. The illumination is uneven (in the photo some parts of the letters are darker than others), it looks sloppy and confusing (it's hard to read the P when it glows like a D). "Blind ten-finger" of course can solve the problem, but then the question arises - why the backlight at all? However, the main thing is the software. It cannot be installed offline - you must have a connection and a registered Razer cloud account. The advertisement says that "you will be able to store an infinite number of profiles" (like this for the sake of users). To this I would like to note that 512 kBytes fit into the configuration flash memory chip (price - 40). In which you can place not "an infinite number of profiles", but everything you need. In this case, the profiles will be with the user, even if the Razer cloud falls or if Razer goes bankrupt and closes. After installation and registration, the software simply did not open the backlight control console. Those. right click on the tray icon, menu item "open" and. nothing. Maybe I didn't install something like . Net or didn't read the instructions (for keyboard installation! ). Therefore, I decided to contact technical support through the Razer website. The site has two fields for the name and phone number (which will call you back). So. After the fourth attempt, it turned out that the phone input field incorrectly handles dashes between numbers (i. E. +7-123-456-78-90 - will not work, you need +71234567890). But the pictures on the site are cool, gaming. And the logo on the keyboard glows. For them - one star in the review.