Check the listing for details. 2 GB Black U Disk USB Stick Pen Flash Drives Black —A36. Color: Black, Condition: New. Listed at 2.99 USD. Maspen 2GIG USB 2.0 Flash Drives Swivel Thumb Drive Memory Stick, Black Tech Specifications: Chip: Grade A Size: 2.25 x 0.62 x 0.39 inch Weight: 4.3 ounces Interface Type: USB 2.0 (backwards compatible to USB 1.1) Compatibility: Desktop, Laptop, Macintosh, Tablet, Speakers and all with USB port, including some old machine, like embroidery machines, printers and more Operating System: Windows 7/Vista/XP/2000/ME/NT/98,Linux and Mac OS Operating Temperatures : 32°F to 140°F (0°C to 60°C) Storage Temperatures: -4°F to 185°F (-20°C to 85°C) 2 GB USB Flash Drives