Uses a 32-bit STM32F105RBT6 chip design, high integration, and reliable performance. Connects to the piano via floppy drive interface; simple installation and use. Uses a standard USB flash drive; format to 1.44MB on first use. Can be formatted into 100 1.44MB drives. Capacity: 1.44MB x 100 (USB flash drive divided into 100 1.44MB partitions). Same size as a standard 3.5" floppy drive, with the same mounting hole positions.Replaces the floppy drive on double-keyboard electronic keyboards, eliminating the problems of floppy drives being easily , having a short lifespan, and being difficult to maintain. Replaces floppy disks with USB flash drives. Compared to floppy disks, USB flash drives offer advantages such as plug-and-play functionality, longer lifespan, stable transmission, larger capacity, resistance to magnetism and mold, shock resistance, smaller size, and portability. Applications: Suitable for YAMAHA EL900, EL900M, EL900B, EL500, EL700, 01C, 01M, and other double-keyboard electronic keyboards. Technical Features: 1. Complies with the specifications of a standard 3.5-inch 1.44MB floppy drive; wiring and usage are the same as the floppy drive on the keyboard. 2. Uses a single 5V power supply. 3. Current versions of USB flash drives only support the most commonly used 512-byte sector size. 4. The USB flash drive has unlimited capacity, but due to floppy drive specifications, it only uses 100 partitions of 1.44MB each. 5. Due to floppy drive specifications, the read/write speed of the USB flash drive is similar to that of a floppy disk, with a speed difference of no more than 10%. 6. Like a regular floppy drive, the USB flash drive does not support hot-swapping, but the USB flash drive itself can be hot-swapped. 7. It supports write protection, the same as the write protection function of aregular floppy disk. 8. It supports 1.44MB formatting similar to a regular floppy disk, and provides a dedicated formatting tool for Windows. Color: Black Material: plastic