J-DEAL&reg; 3 Port Aluminum USB 3.0 Hub with Multi-In-1 Card Reader for iMac, MacBook, MacBook Pro, MacBook Air, Mac Mini, or any PC Sleek Apple-style design ideal For Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini Adds 3 unpowered USB 3.0 ports to your computer - Up to 5Gbps data transfer rate Supported cards: CF, SD, SDXC, SDHC, MicroSD, MMC, M2 Compatible with all Windows/Mac/Linux systems. Easy to set up, Plug-n-Play, Hot swappable, Hot pluggable