Roland SP-404MKII Manual page 9

This unit uses six AA batteries (rechargeable Ni-MH or alkaline).
The unit can run for 3.5 hours on rechargeable Ni-MH batteries (1,900 mAh), and for 2.5 hours on alkaline batteries. (Note that
these times may differ depending on the conditions of use and of the batteries.)
If you handle batteries improperly, you risk explosion and fluid leakage. Make sure that you carefully observe all of the items
related to batteries that are listed in leaflet "Read Me First" (USING THE UNIT SAFELY.)
Powering the Unit via USB Port
You can power this unit with a commercially available USB adaptor, from the USB port on your computer and from similar sources.
The following USB power sources can be used.
●
USB AC adaptor
●
USB bus power (computer, etc.)
●
Mobile battery
We cannot guarantee that this unit works universally with all USB AC adaptors, power from USB ports on computers or mobile
batteries.
Conditions for powering this unit via USB port
When supplying power to this unit via the USB port, be sure to use a cable with USB Type-C® connectors on both ends. No other
USB cables can be used, as they cannot provide enough power to operate the SP-404MK2. Also note that even when using cables
that have a USB Type-C® connector on both ends, you cannot power this unit from devices like USB hubs with insufficient current
output.
Introduction
9