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9.2 Updating the firmware
NOTE: When updating the
firmware, the settings of the
keyboard are reset to default
values and the macros are deleted.
• Make a note of the settings and macros
saved if necessary.
Always use the latest firmware. You can down-
load it for free from: www.cherry.de > Help &
Support > Downloads >
CHERRY MX BOARD 9.0.
1 Load the file onto your PC/laptop.
2 Run the *.exe file.
3 Follow the instructions on the screen.
NOTE: If a firmware update is
interrupted or fails, the keyboard
will not work.
• Connect another keyboard to your PC or
use a laptop and repeat the update.
9.3 RSI syndrome
RSI stands for "Repetitive Strain
Injury". RSI arises due to small
movements continuously repeated
over a long period of time.
Typical symptoms are discomfort in the
fingers or neck.
• Set up your workspace ergonomically.
• Position the keyboard and mouse in such a
manner that your upper arms and wrists
are outstretched and to the sides of your
body.
• Select a comfortable keyboard angle using
the screw-in feet on the back.
• Take several short breaks, with stretching
exercises if necessary.
• Change your posture often.
9.4 Troubleshooting
• Connect the keyboard with both plugs
directly to the high-powered USB sockets of
your computer or laptop. (Do not use
external hubs or extension leads.)
• Make sure that the Win-Key lock is not
activated (see 5 "Function of the CHERRY
key").
• Update the firmware (see 9.2 "Updating the
firmware").
• To make sure that the keyboard is not
defective, test it if possible with another PC/
laptop.
• Use another USB port on the PC/laptop.
• Set the option "USB Keyboard Support" or
"USB Legacy Mode" to enabled in the BIOS
of the PC.
10 Accessories
Accessories are available from specialist
dealers or at www.cherry.de or
www.cherry.cn.
10.1 Performance Key Kit
The Performance Key Kit contains key caps for
the W, A, S and D keys as well as the 4
navigation keys.
The performance keys provide you with the
following advantages:
• Special key profile with a structured surface
for improved grip.
• Pre-travel reduced from 2 mm to 1.6 mm for
faster response.
• The pre-travel can also be reduced to as
little as 1.1 mm using the spacer discs
enclosed.
11 Technical data
Designation
Value
Power supply
2 x USB
Supply voltage
5.0 V/DC ±5% SELV
Current consumption
Max. 1000 mA
Storage temperature
–20 °C ... +60 °C
Operating temperature 0 °C ... +50 °C
EN
15
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