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Android 4.4 or later 

Why does the new HHKB use AA 
batteries instead of a rechargeable 
battery? 

We decided not to use the built-in rechargeable battery but to use AA 
batteries due to the convenience and availability of AA batteries in the U.S. 
market.  If the batteries burns out, users can continue to use their keyboard 
through the USB connector without disruption. 

What is the approximate operating 
time based on battery life? 

The following is NOT a guaranteed value but as reference value 

1.

 

When DIP SW6 = OFF 

a.

 

Size AA alkaline dry battery: 3 months 

b.

 

Size AA nickel hydride secondary battery: 2.6 months 

2.

 

When DIP SW6 = ON 

a.

 

Size AA alkaline dry battery: 1.7 months 

b.

 

Size AA nickel hydride secondary battery: 1.3 months 

Compared to the Bluetooth models, by reducing the power consumption 
during typing, even for heavy users, you can maintain a relatively longer 
battery life. 

How can I save power when using 
the HHKB keyboards? 

Users can choose to save power through the DIP Switch settings.   

 

DIP SW6 is off and is also the default 

 

When DIP SW6 is OFF (power saving enabled), and the keyboard has not 
been used for 30 minutes, it will turn off automatically 

 

When DIP SW6 is ON (power saving disabled), the power will remain on 

What is the difference between 
Bluetooth 3.0 and Bluetooth 4.2LE? 

The 4.2LE communicates differently with the device and also uses less 
energy  

What types of USB cable are 
required? 

USB 2.0 (Type-C) or higher 

Do the new HHKB keyboards 
support USB-HUB? 

No, neither HYBRID models nor classic models accept USB Hub. 

Can users switch from Bluetooth 
back to USB? 

Yes, the USB connection is the default connection.  However, if a user is 

connected through Bluetooth but wants to switch to USB instead, they can 
press Fn + Ctrl + 0 at the same.  This will switch to the USB connection.  

How many devices can new HHKB 
HYBRID keyboards connect to? 

Multi-pairing settings with a Bluetooth connection can be available with a 
simple key operation in the HYBRID and HYBRID Type-S models. Up to four 
devices can be assigned and registered. Users can easily switch devices with 
a single operation. 

How do users switch between 
devices? 

Users can switch to different devices by using key functions.  Please refer to 
the User Manual on the HHKB website (URL here). 

How can users update the 
firmware? 

 

For the HYBRID and HYBRID Type-S models, the firmware is updated 
through the HHKB Keymap Tool, located on the HHKB website 

https://happyhackingkb.com/download/

 

 

For classic models, users will need to download the HHKB Keyboard Tool 
and click “Update the Firmware” 

How long does it take to update the 
firmware? 

Updating the firmware takes about 3-5 minutes 

Is the HHKB Keymap Tool available 
for the Classic models? 

No. The tool is only available for the HYBRID Type-S and HYBRID models. 

Summary of Contents for HHKB Professional Classic

Page 1: ...ame AES key PBT Customizable DIP Switch for customized user experience adjustable feet in three different heights options of printed or blank keycaps What s different about the new HHKB Professional models versus the HHKB Professional 2 models The new HHKB models include new features and enhancements that provide a modern keying experience HHKB Professional Classic models now have the space bar ma...

Page 2: ...h 4 2LE The 4 2LE communicates differently with the device and also uses less energy What types of USB cable are required USB 2 0 Type C or higher Do the new HHKB keyboards support USB HUB No neither HYBRID models nor classic models accept USB Hub Can users switch from Bluetooth back to USB Yes the USB connection is the default connection However if a user is connected through Bluetooth but wants ...

Page 3: ...Switch The LED indicator light will flash For example LED is blue and turns on once for 1 second when USB is active The keyboard becomes disconnected when pressing Fn Q Fn Q is used when pairing a new device In this state if users press Fn X the pairing to new device will be cancelled and returns to the last connection What power supply is being used when the keyboard is plugged to the USB cord bu...

Page 4: ...ettings method that was used to set it up either external switches or using the software If you change an external DIP Switch after you change the mapping using the Happy Hacking Keyboard Keymap Tool software the keymap layout will be invalid and will return to the original setting The HHKB does not work since the PC turns off while updating the firmware Please update the firmware and then restart...

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