Sony MDH-10 ↗

"This is a computer peripheral designed for computer data storage. Uses special MD-Data discs (similar, but not identical to MD-Audio discs). Capacity: 140MB, transfer rate: 150KB/s continuous, 2.5MB/s burst, 320KB internal buffer, average seek < 500ms. LCD display on remote. Includes remote, headphones. Unit will play (but not record) audio MDs."