Ultra-thin USB 3.0 Hub with 2-Slot Card Reader Exclusively For iMac Slim Unibody, Alcey Premium Aluminum USB 3.0 3-Port Hub and SD/TF/Micro SD Card Reader Combo Ultra-thin Upgraded Version: Long-lasting premium aluminum material designed to complement Apple products. No more banding yourself to strange angle just for plugging a USB device onto your iMac. Brings three more USB ports and SD/TF card readers to the front side. Supports SD, SDXC (up to 2TB), SDHC, Micro SD, Micro SDXC, Micro SDHC cards Super-speed USB3.0 ports save on syncing time with data transfer rates of up to 5 Gbps. Backward compatible with USB 2.0 / 1.1 specifications. Anti-slip rubber sleeves for complete stability can protect your iMac from scratches; Blue LED indicator reveals the power status; Built-in surge protector safeguards your devices; Easy to set up. Plug & Play, Hot-Swappable. Exclusively designed for the iMac Slim Unibody model released November 2012 or later. (21 inch / 27 inch / 5K); Operating system compatible with OS X 10.6 & higher, Windows 98SE /ME /2000 /XP /Vista /7/8 /10, Linux 2.4 or above.