Product Name: CF card reader Color: White Specification:   Support operating system (Windows Me/2000/XP/WINDOWS VISTA /Windows ReadyBoost or MAC OS 8.6,9.X and upgraded version，WINDOWS 98with drive）  Memory card support: CF/CFⅡ/CF UltraⅡ/CF Extraeme/CF hard disk card  USB port, need no external power  With high-speed USB2.0 plug port  LED light instruction, support hot plug and play. LED light keeps on when card is inside. Vice verse. LED light twinkles when upload, download or data  reading. LED light keeps red when default.