The story
Later 1541s were built in Taiwan. These units carry later serial numbers (beginning JA11 on the example here) and take power through a standard IEC kettle-style socket, the kind still used on computer power cables today.
It does exactly the same job as the Japanese-built drive: a 5.25-inch single-sided drive storing about 170 KB per disk on the Commodore serial bus. What changed were the factory, details of the power supply and the board revision. Both production lines work with the C64, the 128 and the Commodore 64 Ultimate through its serial port.