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Redragon

Redragon K521 Upgrade Rainbow LED Gaming Keyboard, 104 Keys Wired Mechanical Feeling Keyboard with Multimedia Keys, One-Touch Backlit, Anti-Ghosting, Compatible with PC, Mac, PS4/5, Xbox

Based on 11,448 reviews
Condition: New
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$15.99
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 2
Order within 17 hours and 26 minutes

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At a glance

Condition
New
Color
Black
Model
K521
Keyboard Description
Gaming
Special Feature
Backlit, Quiet
Style
Classic
Switch Type
Mechanical
In the box
USB CableKeycaps
Works with
Laptop, PC

Features 6

  • Dreamy Rainbow Gaming KeyboardK521 Gaming Keyboard Adopts a Different LED Backlight Design, Upgraded on the Traditional LED Backlight Effect, Making the Light More Penetrating, Giving You a More Dazzling Visual Effect, Making Your Gaming Process More Enjoyable
  • One Touch Opens & Visual FeastThe K521 Red Dragon Keyboard has a One-Touch on/off Lighting Button for Added Convenience. It also has a Three-Position Adjustable Breathing Mode and a Four-Position Adjustable Brightness Lighting Mode
  • Mechanical Feeling & Fast TappingThe PC Keyboard Keys are Designed for Mechanical Feeling, Giving You a Better Feel During Use and the Ability to Trigger Keys Quickly, Allowing You to Win All Your Games
  • 19 Keys Anti-Ghosting KeyboardAnti-Ghosting Ensures Every Button Can Be Triggered. This Allows You to Trigger Key Combinations In The Game Accurately, And Each Skill Can Be Accurately Released to Increase Your Winning Rate. Redragon K521 Will Be Your Perfect Partner

Specs 26

Brand Redragon
Connectivity Technology USB-A
Keyboard Description Gaming
Recommended Uses For Product Gaming
Special Feature Backlit, Quiet
Color Black
Style Classic
Model Name K521

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If you place your order now, the estimated arrival date for this product is: Monday, Nov 2

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Top Amazon Reviews

Great keyboard
Color: Blue-Black
I love this keyboard, it's quiet and has a good texture to the keys. Because of the matte quality of the surface, it will gather dust if it's not cleaned regularly, but it wipes down very easily. I love the key feel and the colors of the lights.
Reviewed in the United States on June 1, 2026 by Em Winter
Good quality budget backlit keyboard
Color: Black
I'm not a gamer, just bought this reasonably priced keyboard for the backlight. Doesn't feel cheap, has a reasonable amount of weight to it. Key labeling fonts are large and work well with 3 light level rainbow backlight. Dedicated key for turning backlight on/off. There is a bit of mechanical feel to the keys but obviously at this price is not a true mechanical keyboard (if that is important to you). ... show more
Reviewed in the United States on April 6, 2026 by gravityrules
Great RGB Keyboard
Color: Black
great keyboard. keys are not clicky at all, very light, good for office work with a little light that you can change to either breathe or steady, and has 4 light levels of brightness. good compatibility durability USB plug in no installation
Reviewed in the United States on April 12, 2026 by GwenTests
Would be great if it held a charge
Color: Blue-Black
I've only had it for a couple of days but so far I'm liking this keyboard. The only issue that I'm currently having is that it won't hold a charge. I left it plugged in overnight and when I disconnected the power cord, nothing worked. I can only use it when it's plugged into a power source which technically takes away from it truly being "wireless". I've contacted the company for assistance so my rating may change depending on the results. My only other complaint is that the keys aren't as bright as I might like but I love all the color varieties. The typing aspect of this keyboard is amazing! The keys are super smooth and quiet! Overall, I really like it so hopefully they can help me figure out why it won't charge so I can keep it. UPDATE: I received an email back from the company telling me that I needed to contact Amazon's Customer Service department to either return or replace the product! No troubleshooting questions, just "call Amazon". I did call Amazon and they, however, were very helpful! I received a replacement faster than when I ordered the original! The company contacted me again (after I gave 3 stars), telling me that they would like to address any issues or concerns and to reply back so they can work to resolve my issues. After replying that Amazon has already resolved my issues, they apologized for the inconvenience and that I should contact them if I have any issues with the new keyboard. To be honest, I'm thankful that there have been no issues so far because I'm not confident that they wouldn't just send me back to Amazon again. So far, this keyboard is working the way it should and I really like it! I'm going to change my rating from 3 stars to 4. Now that I have a properly working product, I really like it but I'm only giving it 4 stars because the Company's "Customer Service" is lacking in the "service" department. ... show more
Reviewed in the United States on July 15, 2022 by Chicken Lady
Good Value
Color: Black
Good Value for money. Have used very expensive keyboard in past from Top brands but never had any advantage. This one works just fine for any type gaming
Reviewed in the United States on June 13, 2026 by Harry
WHERE HAVE YOU BEEN ALL OF MY LIYIIIFE
Color: Black
I am EXTREMELY EXTREMELY picky about my pc peripherals. The touch, tactile feel, sense of separation of states, and even shape play such a major role with how I feel connected to my pc. I've owned a lot of keyboards over the years. Some mesh membrane, others mechanical. Nothing really 'fit' so I just put up with 'good enough' But my god, THIS FREAKING KEYBOARD is perhaps the single most perfect keyboard in all existence and it's $15... It's build quality feels higher than some of the $60 and $100 keyboards I've had from other brands. I had one issue where the RGB cut off, but port cycling fixed it. The keyfeel is amazing. High initial force, very low sustained force required to hold the key down. I'd guess these are 60-70g actuation force keys, but probably 30g bottom out force. Fantasmical. Going back to the hyperx keyboard I had been using just felt like I was typing on applesauce. This feels like I'm playing with one of those ADHD fidget toys and I love it. It looks good too I guess, I never really cared about that. Just a normal rectangle with no stupid cheap flare. I may consider upgrading to the wireless. ... show more
Reviewed in the United States on December 10, 2025 by HiveTyrant36
A steal for the price
This is a very good full keyboard, with inverted T arrow navigation keys, numeric keypad, home/end/pgup/pgdown/delete/insert grouping, and 12 function keys. It's also backlit with a good variety of lighting modes. So far I'm really happy with it. Could it be better? Sure; it lacks a wrist rest, ergonomic layout like a Microsoft Natural, and doesn't have dedicated media control keys (although this last point isn't a big deal for me since this keyboard is for use with a computer that won't be used for multimedia). However, keyboards are a very personal thing and a big deal these days, so here are some more details to help you understand this keyboard's features. Weight: It's not as heavy as the dedicated gaming mechanical keyboards that seem popular now with gamers and programmers. But it's not flimsy either. Light enough to not be much hassle if you're going to be traveling with it. Key feel: This keyboard is not one of the loud clicky ones. It does feel more tactile than a typical membrane keyboard, and the keys have a nice travel when you press them, but the click sound is very soft. These are regular-style keys, not chicklet keys. Lighting: I wasn't too worried about have top RGB features, but sometimes if it's darker in the room I do like some backlighting. This keyboard is a nice compromise between keyboards that have only white backlight, and keyboards that have a full software control app that let you customize everything. There is no software with this keyboard, it has several modes all configured using the function keys. Here are the lighting modes: - Lighting off/on - Neon mode: multiple colors light up three static zones on the keyboard. There are a few combinations you can select. The colors stay the same in the zones and don't change. - Spectrum mode: 7 colors rotate and fill the entire keyboard continuously. So it'll be lit red, then fade into purple, then blue, then green, etc. - Static mode: You cycle through and pick the color you want of the 7 supported colors, and it will stay lit continuously with just that one color. There are brightness and breathing effects that you can configure for each of the modes. I only use static mode, but gamers might like the other ones. I saw more expensive boards that only did spectrum or only had one color. Key visibility: The keys are not painted so they're a little hard to read in poor lighting if you don't use the backlight. However, I did like that the symbol keys had the correct placement for lower/upper case characters. I have seen many expensive keyboards from Razer, Corsair, Alienware, etc., that often invert the upper/lower case labeling for symbol keys and number keys. If you're an experienced typist, you'll work around that, but it bugs me when I see it. I found out later that this is an intentional design decision so that the more commonly used lower case symbol is more visible when backlit (the lighting doesn't cover the entire key and ends up emphasizing whatever character is in the upper case position). But you won't have to worry about that with the ReDragon. Key layout: After looking at the huge variety of keyboards on Amazon, you'll notice that some smaller keyboards don't have the numeric keypad or the six-key navigation group. Or that some have that ANSI style keyboard with the bigger Enter key but then put the slash key somewhere else. Or some that have compressed distance between keys or even smaller keys to make it more compact. This keyboard has an ISO keyboard layout with 104 full-sized keys. The key spacing is about a quarter-inch, which is similar to other full-size keyboards I've used. For the price, I think this is a great peripheral. Longevity would be my only concern, and I'll update this review later if I run across any issues. ... show more
Reviewed in the United States on July 1, 2023 by Amazon Customer
Bought 2 of these keyboards. Both stopped working 5-6 weeks after purchase.
When I purchased the first Redragon K509 keyboard, I also purchased a Redragon S107 keyboard and mouse combo at the same time. The keyboard in that S107 combo looks identical to this K509 keyboard. It even has the exact same instructions, looks identical, and behaves exactly the same. This K509 keyboard appeared to be a good value. I felt the quality was good for the price. The LED's were not fixed colors (which is good), and the LED's could be set in many colors, in "breathing mode" and constant brightness. However, when set to constant brightness, the lights dim a significant amount. I could live with that. I would give this K509 model a fairly high rating, but after 6 weeks, the first keyboard stopped working. Windows would no longer recognize the device. I tried plugging it into different USB ports, but that made no difference. I tried using the keyboard on 2 other PC's, and they had the same trouble recognizing the device. I figured I just had bad luck, and ordered a second, exact same keyboard. After 5 weeks, this second keyboard started having the exact same trouble. Windows would no longer recognize the device. It couldn't even tell it was a keyboard. Again, I tried this keyboard different USB ports and on two other PC's. It would not work no matter which port or PC I plugged it into. Other devices, including other keyboards, work on each of the USB ports I tried on the 3 different PC's. I also have a Redragon S107 Keyboard that is part of the Redragon S107 Keyboard/Mouse combo. That keyboard still works great, and looks and behaves identical to the K509, except for the label underneath the keyboard. The S107 keyboard (not this KB) works just fine on all 3 PC's, and I still use it without trouble, to this day. I have contacted the manufacturer and attempted to get support for this product, multiple times, and they said that it was a problem with the USB port, and to plug into another port. I had tried this, as well as trying the keyboard on multiple USB ports on two other PC's. The manufacturer would not admit that the problem was with the keyboard. I was given instructions how to remove the unrecognized device in the Windows "Device Manager", and let windows recognize the device again. This had no effect. After the problems began, each time I plug in the keyboard, it would light up for a few seconds, the PC would make the typical "USB device attached" sound, then the light would turn off. Two or three seconds later, it would light up, PC makes the sound again, and lights turn off. It would repeat this for various number of times, before the keyboard would eventually have the lights stay ON, and look as if it was working, but none of the keys would respond. When I check Windows 10 "Device Manager", I would see the keyboard listed as "Unknown USB Device (Device Descriptor Request Failed)" The Device Status read as, "Windows has stopped this device because it has reported problems. (Code 43) A request for the USB device descriptor failed." I like this keyboard. I would purchase another, but I worry that there may be a design or manufacturing flaw, causing an increased chance of the device failing to be recognized by the PC. I have only tried two of these keyboard, so I cannot be sure. But 0 out of 2 is not a record that would inspire the confidence for me to recommend this keyboard to anyone. I get this exact same behavior and error on all 3 PC's... an HP desktop, a Dell/Alienware desktop, and a Microsoft Surface Pro 4 Tablet PC. My Redragon S107 Keyboard and mouse combo continues to work just fine. I have an older USB keyboard being used instead of the two Redragon K509 keyboards. Neither K509 keyboard was damaged, dropped, or misused in any way. They get plugged in, and remain in a fixed position from that point forward. No food or drink is consumed near them, because they are located around other sensitive equipment. I should have attempted a product return on Amazon, but it was already outside the window of time I could return or exchange the product. That is on me. However, the manufacturer still would not admit that the keyboard was defective in any way, in spite of the obvious evidence to the contrary. ... show more
Reviewed in the United States on May 9, 2020 by TSForrest
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