First, I will start off by saying that my main driver is a Logitech G710+ and a G602, so quality is a factor when purchasing products. I purchased this set for a client gaming build, and I was very surprised. Here are the pros and cons for both items

Keyboard:

Pros:
-The keys! They actually feel mechanical, even though they are membrane. They have a sort of tactile feedback without the noise of springs. I would (almost) argue that they have a better feeling then Cherry MX, but are slightly harder to type on. Then again, its practically a 20 dollar keyboard.
-The backlighting is bright, but not too bad. All the space under the keys are lit up, as well as the tops of the caps.
-Full 10 key layout for maximum usage, but in a slightly compact form factor.
-Normal key layout that most people should be familior with.
-Dedicated media keys and volume up/down (no mute)

Cons:
-On or off backlighting, and when off the lettering is near to impossible to see. So basically all black keys.
-No software support for macros (knew this before purchasing)
-Raised keys, which may feel different at first for people used to using flat keys. (Similar to mechanical keycaps)

Mouse:

Pros:
-Fairly comfortable, palm grip feels good and claw grip is possible (more of a palm mouse though).
-Clicky right/left buttons feel normal, nothing exceptional though
-Smooth scroll wheel with clicky increments.
-DPI switch for on the fly changes in games.
-Forward/back keys on the left side.
-Rubber grip on the front side for 2 two outside fingers.
-Awesome looking lighting down the middle, on the scroll wheel, and even on the front like a car grill.

Cons:

-Again, no marcos, which is understandable for a 10 dollar mouse.
-Not much support for the outside fingers.
-Light always stays on.

To wrap it up, these are both exceptional products for 30 dollars (I say about 20 for the keyboard, 10 for the mouse). There is nothing else on the market name brand like this for that price. This is also a good entry keyboard for someone who doesn't know if a mechanical keyboard is good for them since it sort of has the correct feel. I can easily recommend this for any gamer with any system, or even for someone who wants a good looking setup. It has a passive aggressive look that is hard to produce, but Cooler Master hit the ball out of the park on this one.

Overall, this is a good keyboard for the price. I use it on a computer that dual boots Windows 8.1 and Linux Mint 17 Cinnamon.

The mouse light is always on while it has power. At first I had it on, even when the computer was turned off. That can be fixed by changing a setting in BIOS telling your motherboard that you don't want to be powering usb devices when turned off.

On Windows, the keyboard starts with LEDs all off, but they can be toggled with SCR LK.

For Linux, here is a summary of tweaks I had to do to make the keyboard work the way I wanted it:

1 - add: "xset led 3" to startup applications to make the keyboard backlight turn on AFTER you log in.

2- to turn it on BEFORE login, I edited /etc/mdm/Init/Default, adding "/usr/bin/xset led 3" just before the "exit 0" at the end of the file.

3- I found a simple script to enable SCR LK to toggle the backlight. Then I added bound it to a custom shortcut under (Keyboard settings) -> Keyboard shortcuts (tab) -> Custom Shortcuts. Here is the script:

#!/bin/bash
MASK=`xset q | grep LED | cut -d' ' -f 21 | cut -b 8`
if [ $(($MASK & 4)) = 4 ]; then
xset -led 3
else
xset led 3
fi

All in all, I am happy I got the keyboard, but -1 star for making me do so much research to make it work for linux. I wish it just had an on/off switch built into the keyboard that didn't require any interaction with the OS, or just left it always on because you really can't read the keys when the light is off.

The CM Devastator combo is a decent peripheral combination for the price. At $29.99 you get a back lit membrane keyboard and 2000 DPI LED lit mouse in blue, red or green.
The Keyboard:
As membrane keyboards go, this one is a much higher quality than most. Although the box does not post numbers, most membrane keyboards are rated at around 5 million key presses. The keyboard itself is a grainy matte finish with shiny accents around the sides of the keyboard that are a huge fingerprint magnet. A CM Storm logo sits beneath the num,caps and scr lock indicators. The key caps are laser-etched to show the lighting from within the keys, and have a very pleasing smooth rubber coating to them. CM boasts "tactile" feel but this is nothing like a mechanical keyboard. There is a "bump" before the key bottoms out, but it feels more resistant to your presses, but being a membrane requires you to bottom out. Some have compared the feel almost to a Cherry MX Brown but I would disagree. As far as membranes go, this is one of the best feeling out there. The blue lighting is even across all keys, and the back plate is white to help disperse the lighting. The num, caps and scr lock indicators also match the back lighting, and oddly CM requires the scr lock button to be pushed to have the LED's light up. There are no lighting modes nor brightness settings, which is a shame. With the lighting off, the keys are difficult to see in dark lighting so it is usually necessary to keep the back light on all the time. The keyboard has media keys across the top in the form of stop, play/pause, rewind and fast forward on the left and volume up and volume down on the right. The inclusion of the media keys is very welcome. Because of the thick bezel around the whole keyboard, it is difficult to use a wrist rest and the sloping area beneath the keyboard is not extensive enough to use as the wrist rest. Using typerracer.com, I averaged a best of about 79 WPM with a 1% error rate, but using a mechanical for as long as I have it took some getting used to because of it's membrane build. Using the Microsoft Ghosting tool, the keyboard could barely squeeze our 6KRO, but not for close keys. The lack of a Windows key lockout on the keyboard is a sore omission to a gaming keyboard. It all wraps up to a flimsy feeling rubber mouse cord going to a silver USB plug. The plug does not have any indications as to what it is, so finding the plug on the back of your PC may require following the cord. The bottom also has 4 well placed rubber feet, but the elevation tabs are not rubberized. This keyboard is also plug-and-play, no software even available.
The Mouse:
The mouse has a very similar build quality to the keyboard, being covered in the same pleasing smooth matte finish as the key caps. The side of the mouse has a rubber area towards the front of the mouse on the left and right for grip, and has forward/back buttons on the left, and the DPI selector right below the scroll wheel. Despite only being on the left, the mouse is uniform on both sides so a left hander should be able to use with no problem as long as that individual doesn't need the forward/back buttons. The mouse will have the same color LED's as the keyboard when you purchase, and illuminates the front of the mouse with sort of "headlights" under the left and right buttons, the left and right of the scroll wheel, the DPI selector and some "veins" right below that selector. Overall it is very tastefully done and isn't too "gamey" looking. Sadly you cannot turn off the lighting like the keyboard, and the mouse stayed lit up even when the PC was powered down. On the bottom are 4 very small mouse skates, but provided smooth tracking. CM does not indicate what type of sensor is used, nor the switch type for the buttons, but the presses were positive and had a nice sound. The 3 DPI settings are indicated by the lighting of the DPI selector. Off means 1000 DPI, dim lighting is 1600 DPI, and bright lighting is 2000 DPI. 1000 was a little too slow for me but strangely I could barely tell the difference between 1600 and 2000. There is obvious acceleration going on in the mouse. I usually kept it at 2000, but I experienced no tracking issues while playing some FPS's and RTS's. The scroll wheel itself is rather spongy when scrolling but the steps were noticeable. There is no optional weights to the mouse, and it was on the light side. The mouse has a similar rubber cord going to a silver USB, also not labeled.
Overall, this is a solid combo, and is a decent product for basic gaming and PC use. The back lighting looks good the tactile key presses feel much better than a regular membrane keyboard. The mouse is decent for gaming and looks great with the lighting.
Pros:
Feels much better than most membrane keyboards; good looks and good back lighting; media keys; nice finish on mouse and key caps; 3 mouse DPI settings; awesome price; 3 available back light colors.
Cons: Keyboard is hard to see with lights off; lighting is either on or off with keyboard; can't turn mouse lighting off, even when powered down; DPI settings are difficult to tell apart at the 2 highest settings.