This article covers CORSAIR K70 RGB MK.2 SE（ CH-9109114-NA）ゲーミングキーボード, the CORSAIR K70 RGB MK.2 SE gaming keyboard.
Overview
The CORSAIR K70 RGB MK.2 SE (model CH-9109114-NA) is a wired, full-size gaming keyboard that pairs a silver aluminum frame with PBT double-shot keycaps.
The short verdict: if you use a Windows PC, are fine with a US layout and want keycaps that won't go shiny or lose their legends, it is still a strong pick. If you are Mac-first, need a Japanese layout or want wireless, another keyboard will probably suit you better.
It offers per-key RGB backlighting with about 16.8 million colors and 8MB of onboard memory for storing profiles.
That means saved settings still work on a PC without iCUE installed, which matters in practice. It also supports 100% anti-ghosting and N-key rollover, so simultaneous key presses are never dropped.
On Amazon.co.jp, it had 2,836 reviews with a 4.7 out of 5 rating (94% positive) as of September 2026.
That is a high rating for a model that has been on sale this long, and it suggests buyers value its typing feel and build quality.
Compatibility Guide
The keyboard connects via USB 2.0, and the official compatibility is listed as Windows PC only.
It is designed around CORSAIR iCUE for detailed lighting and macro setup, so expect full functionality only on Windows. macOS and game consoles are outside the listed support.
Even if basic typing works, lighting and macro configuration are not guaranteed.
| Environment | Rating | Notes |
|---|---|---|
| Windows PC | Excellent | All features available through iCUE |
| macOS | Limited | Outside the listed support. Do not expect full features |
| Game consoles | Limited | Outside the listed support. Not guaranteed to work |
| PC with few USB ports | Good | The passthrough may need an extra port |
The keyboard has a USB 2.0 passthrough port for a mouse or headset receiver.
Setups like this usually need a second USB port on the PC to use the passthrough, so check that your rear panel has one free. Because the passthrough is USB 2.0, it is not suited to fast devices such as external SSDs.
Think about desk space too. This is a full-size board with a number pad, and it comes with a detachable wrist rest, so it takes up real width and depth.
Low-sensitivity FPS players who make big mouse sweeps should measure their desk to make sure the keyboard won't get in the way.
Check the layout as well. The -NA suffix in the model number usually marks a North American model, so this unit is most likely a US layout.
If you were expecting a Japanese layout, symbol positions and the missing Hankaku/Zenkaku key will catch you out. Always check the key layout photos on the listing.
Product Info
| Item | Detail |
|---|---|
| Backlight Colors | About 16.8 million (per-key) |
| Onboard Memory | 8MB |
| Key Rollover | 100% anti-ghosting / N-key rollover |
| Connection | USB 2.0 |
| Keycaps | PBT double-shot |
| Frame Material | Aluminum |
The CORSAIR K70 RGB MK.2 SE is a special edition of the K70 RGB MK.2, which was released in 2018.
What sets it apart from the standard model is its silver frame and PBT keycaps. It comes with a 2-year warranty and includes a USB cable, a keycap puller and a detachable wrist rest.
Bundled items can vary by seller, so check the listing's accessory photos and description.
As of September 2026, Amazon.co.jp listed it at JPY 47,973.
At that time it was sold and shipped by クリエイトハマダ, a third-party marketplace seller rather than an official CORSAIR store. Prices for older models vary widely between sellers and also move with sales and stock levels.
Check the current price and seller on the listing before you buy. We could not capture an eBay price, so it is not used for comparison here.
What PBT Keycaps and an Aluminum Frame Actually Change
The materials are the main reason to choose this SE model. The ABS keycaps common on gaming keyboards tend to wear and turn shiny over time.
PBT is a harder plastic that keeps its surface texture longer. Double-shot molding forms the legends from a separate piece of plastic, so unlike printed legends, they cannot rub off.
An aluminum frame flexes less than a plastic chassis and resists creaking under heavy typing. The downside is weight, which is a burden if you plan to carry the keyboard around.
The more you treat it as a desk tool you will keep for years, the more you will appreciate these materials.
Who It's For
- Gamers: Well suited to FPS and MOBA titles that demand fast, accurate input. With N-key rollover, pressing movement and ability keys together never drops an input.
- Users with multiple PCs: The 8MB of onboard memory lets you carry your profiles to machines that don't have iCUE installed.
- Aesthetics-focused users: The silver frame and per-key RGB lighting make it a centerpiece for a desk setup.
- Typing-focused users: The PBT double-shot keycaps keep their legends and resist shine, so the keyboard feels the same after years of use.
- Not for: macOS or console users, anyone who wants wireless, anyone who needs a Japanese layout, or people with small desks who would be better served by a tenkeyless board.
Before You Buy
First, the price. The captured price of JPY 47,973 is high for a wired gaming keyboard.
You would be buying an older model from a marketplace seller, and the price for the same ASIN can change a lot depending on the seller. Unless you specifically want the silver-and-PBT SE combination, compare it against current models before deciding.
Second, the layout. As noted above, the -NA model code points to a probable US layout.
If you rely on the Hankaku/Zenkaku key to switch Japanese input, you will need to remap keys in your OS.
Third, platform support. The listed compatibility is Windows PC only, and iCUE configuration assumes Windows.
It is not a good fit if you move between Mac and Windows or also want to use it on a console.
Fourth, the switches. The article data does not say which switch type is installed, so check the listing for the actuation force and travel.
This is also a conventional mechanical keyboard, not one with magnetic Hall-effect switches. If you want features like rapid trigger, which let you fine-tune the actuation point, look at magnetic-switch models instead.
Finally, the cable. It is fixed to the keyboard and cannot be replaced if it breaks.
Avoid leaving it sharply bent on the desk or running it over with a caster chair, and it should last a long time.
FAQ
Q. Does it work on a Mac? A.
The official compatibility is Windows PC only. Basic typing may work, but do not expect full features such as lighting and macro setup.
Q. Is it a Japanese layout? A.
The -NA suffix usually marks a North American model, so it is most likely a US layout. Check the key layout photos on the listing before you buy.
Q. Do I need iCUE? A.
The keyboard works without iCUE. Profiles saved to the 8MB onboard memory can be used on PCs that don't have iCUE installed.
Q. Does it drop simultaneous key presses? A.
No. With 100% anti-ghosting and N-key rollover, every key in a multi-key press registers correctly.
Q. How is it rated?
A. As of September 2026, it had 2,836 Amazon.co.jp reviews, rated 4.7 out of 5 (94% positive).
Product Disclosure (Amazon)
- Manufacturer: CORSAIR
- Seller: クリエイトハマダ
- Fulfilled by: クリエイトハマダ
- ASIN: B07D5S24BP
- Note: This article covers a manufacturer-made product based on Amazon listing details.
