Realforce SA for Mac / R2SA-US4M-WH Discontinued

MacCapacitive KeyAPCUS45gSoftwareSilentN-Key

Main Photo

Realforce's first keyboard for Mac

The US English layout of the Mac standard is adopted, and Realforce's original key switches, which pursue a pressing feeling called feather touch, can be operated comfortably with the familiar Mac standard key layout.

One-touch Function/Media key switching

Function key and Media key special functions such as screen brightness, volume, and media operation can be switched with a single touch without starting System Preferences.

See the User's Manual for details.

Simple key-top font that fits in with Mac

The key tops are printed in a simple font that blends in with the Mac.

Customizable Mac Software

Disable each key switch, swap CapsLock and Ctrl keys, set indicator LED colors, and, on models with APC functionality, individually set the response position of each keyswitch.

APC function

APC (Actuation Point Changer) function that allows adjustment of switch on position

Topre's unique APC function enables up to 25% faster input than with ordinary mechanical key switches (according to our own research). The on-position of each keyswitch can be adjusted in three steps of 1.5mm, 2.2mm, and 3mm to optimize the keyswitch response speed. For example, keys that you want to input quickly can be set to 1.5 mm, while keys that you want to prevent accidental typing can be set to 3 mm.

Silent image

Stress-Free Silent Keyswitch

The waveform data in the figure is an example of extracted 2,500 to 5,000 Hz, a frequency component with high human auditory sensitivity, from keystroke recording data by the same subject for standard and Silent keyboards. Compared to the standard key-switch keyboard, the amplitude (vertical axis direction) of the silent key-switch keyboard is much lower, indicating less stimulation to the ear.

LED indicators

Color-changing indicators

The LED color of the indicator that shows the status of CapsLock, Win mode, etc. can be customized by selecting from seven colors according to your preference by operating the keyboard, and the brightness of the LED can be adjusted.

LED indicator color with APC function

By using the APC key, it is possible to adjust the actuation point by selecting from 3 levels. The level of actuation point can be confirmed by the color of LED indicator.

  • LED color: Blue

    LED color: Blue Actuation point: 1.5mm for all keys (Speedy input)

  • LED color: Green

    LED color: Green Actuation point: 2.2mm for all keys (Normal input)

  • LED color: Red

    LED color: Red Actuation point: 3.0mm for all keys (Mistaken input prevention)

  • LED color: White

    LED color: White Actuation point: Customized for each key (Speedy input & Mistaken input prevention)

* The white LED represents the actuation point of "each individual key" customized by the Realforce software.

Click here to download the Realforce software.

Cable slit

Cable can be extended in 3 directions

The cable outlets are placed on the left, right and upper side of the keyboard. Cable outlets in 3 directions allows for optimal placement according to the installation environment.

Tilt stand

More traction and more stability

By increasing the surface area of the bottom rubber pads fourfold, and by adopting a soft resin material on the bottom of the tilt stand, the keyboard is more stable and less likely to accidentally be displaced on glossy surfaces such as glass.

Key spacer

Adjustable by key spacer

Two types of integral key spacers with 2mm and 3mm thickness and a key top puller are attached. Installing the integral type key spacer under the key top according to the APC function setting provides for faster keystroke return, allowing for quicker key input.

Capacitive key

Topre Capacitive Key Switch

Superior key touch feel.
No chattering.
No contact mechanism.
Made in Japan.

N-key Roll Over

N-key Roll Over

No matter how fast you are, you’ll never miss. The REALFORCE can keep up with any number of keystrokes and ensure you’re always in control.

Step sculpture design

Ergonomic Form Factor

The step sculpture design allows for smooth movement across keys and comfortable typing over long play time.

Force diagram

Realforce Unique Feather Key Touch

The unique key load characteristics that pursue the pressing of keyswitches to the utmost limit realize a pleasant feeling of key input as if you were pressing feathers, which is not possible with other keyswitches.

Key life time

Key Life Time

Each Topre key switch is tested to clear 50 million keystrokes.

USB I/F Connection

USB Type A plug
High speed 1000Hz polling rate support

Made in Japan

Commitment to quality, durability, and technological sophistication.


PrintSublimation printing
Key Life Time50 million times
Dimensions142mm x 455mm x 39mm
LayoutUS layout 109 keys
Cable Length1.6m
Key WeightALL 45g
Key Travel4mm
Key ShapesStep scultpture
N-Key RolloverN-Key Rollover
System requirementsmacOS X 10.10 or later, USB 2.0 port, Internet Connection(for downloading Software)
Country of OriginMade in Japan, Designed in Japan
ContentsKeyboard, Warranty card, User’s Manual, Key cap puller, Key spacer(2mm / 3mm)

User's Manual

Realforce for Mac User's Manual

Please refer to the User's Manual for Realforce for Mac key assignments.