1. Small and portable - Can be taken it with a wallet. 2. Plug and play Hot swapping USB power (no external power or battery) Supper speed USB 3.0 and backward compatible with 2.0 or 1.1. 3. Easily transfers content to or from your USB devices with a card 4. Compatibility: 7 or 8 or 8.1 or 10and, IOS, for-MacOS etc. 5. It allows you to easily add a USB 3.0 multi-slot card reader or writer to your USB 3.0 enabled system. Different batches may have different appearance, which does not affect use. Colour:Silver Material:Aluminum alloy Package Contents: 1 x USB 3.0 memory card reader Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.