Features: 1) 2-in-1 multifunctional pen with USB disk 2) USB Plug-and-Play, no driver required 3) System: Windows 98 / 2000 / ME / XP / Linux and Mac OS 4) USB 1.1 / 2.0 standard port 5) Writing speed: 860Kbps 6) Reading speed: 960Kbps for USB1.1 7) Writing speed: 11Mbps, reading speed: 12Mbps for USB1.1 8) A level flash chip, support HDD/ZIP initializing mode 9) USB disk with 128MB / 256MB / 512MB / 1GB / 2GB optional