CD features: 3.5inch USB External Portable Floppy Disk Drive Diskette for Laptop Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Note: Win10 and Mac will not display immediately when they are plugged in directly. It will be displayed only when the disc is used to start reading. If the disc is always inside, remove the disc and put it in again to automatically read. Specifications: USB bus power supply available: 500 mA or less Data capacity: 720 KB / 1.44 MB (formatted) USB DATA transfer rate: full speed / 12 Mbps Data transfer rate: 250 Lbits (720 KB) / 500 Kbits (1.44 MB) Number of cylinders: 80 Rotation speed: 300 rpm, 360 rpm. Registration method: MFM Media: High Density (2HD) OR Normal Density (2DD) Average latency: 100 MSEC (1.44 MB mode) 83.3 MSEC (720 KB mode) Operating temperature: between 4 degrees Belsius and 51 degrees Celsius; Between 39 degrees Fahrenheit and 125 degrees Fahrenheit Relative humidity: in operation: between 20% and 80% Weight: 0.36 kg Height: 16.6 mm Width: 103 mm Depth: 153mmHardware Requirements: -Computer with USB port -USB Universal Host Control