Sekonic SR-3500 Operating Manual page 16

Precautions For Use
(14) Make sure to observe the following points when you handle the device
and USB cables. Otherwise, mechanical failure or damage may be caused.
* Do not forcibly pull or bend the USB cable.
* Always hold the plug when you insert or pull out the USB cable. Never
apply excessive force to the cable.
* When installing/moving the device or a PC, do not apply excessive power
to the cord or plug of the USB cable.
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