External USB Floppy Disk Drive. USB Connection featuring plug and play. Interface: USB V1.1, compatible USB 2.0. Powered by USB port, no extra power supply needed. Disk type: 3.5-Inch High Density. Data capacity: 1.44Mb.USB Transfer rate: 12Mbps (Max). Operating temperature: 5°C to 35°C (41°F to 95°F). Humidity: 20% to 80% non condensing. Dimension: 149x103x17mm (Length Width Height).