6 USB portsWith 2 5V USB output interfaces and 4 USB 2.0 transmission interfaces the total power can reach 15W (Note: fast charge is not supported this product does not include USB adapter 5V3A adapter is recommended). Metal switchSix creative retro metal switches which turn on and off to produce mechanical sounds can be independently controlled for each USB port. Card Slot DesignHolds 6 USB or 3 SD cards 6 TF cards 2 SIM Card Needle slots. Wide CompatibilityCompatible with Windows/Mac OS/Linux/Unix. USB 2.0 High-Speed (480Mbps) Full-Speed (12Mbps). As a GiftIt's a personal gift for a good friend. For powering and managing USB peripherals use it on your desk and make them look cool.