Good to know. The BK9 has a dedicated slot with a cover so theres nothing sticking out. I may do that as once and only once I went to a rehearsal and forgot the USB. Just played piano and organ so all was good but I may leave one in the BK9 "just in case"
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer