olemus
(1) liik hübriidkettaid, koosneb kõvakettast ja pooljuhtkettast
= a hybrid system made up of two separate drives, one SSD and one HDD, which are combined together to function as one drive
https://en.wikipedia.org/wiki/Hybrid_drive

(2) kahepistmikuline (USB ja micro-USB) mälupulk
= a double-connector type of flash memory
https://duckduckgo.com/?q=dual+drive&t=h_&iax=images&ia=images