Korg KROSS Operation Manual page 116

Pad audio play
5. To switch between banks of assigned audio songs, use
the BANK SELECT button and the BANK LEDs.
Press the BANK SELECT button to make the BANK
LEDs indicate the bank that you want to select; the
BANK LED blinks. When 1 second has elapsed with the
LED blinking, the switch to that bank is confirmed.
Note: While the BANK LED of the selected bank is still
blinking, the bank switch has not yet been confirmed.
Blinking stops if you select the bank in which you're
currently working.
Note: Data is read when you switch banks. Never remove
the SD card while this is occurring.
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