Features: 1. Multi-Card Reader + USB HUB 2. LED light to indicate whether work or not 3. We ca Features:1. Multi-Card Reader + USB HUB 2. LED light ... , the card reader supports hot-swapping, and be compatible withUSB 2.0 and USB 1.1. 5. Supports CF, SD, MMC, XD, MS card, etc ... . 6. Power supply: DC+5 vols is supplied by USB Port ...