1.Ultra-thin upgraded version: durable premium aluminum material designed for products. No more fitting into an odd angle just to plug a USB device into yours.2. It brings three more USB ports and an SD/TF card to the front side. Supports SD, SDXC (up to 2TB), SDHC, -SD, -SDXC, -SDHC cards.3.Super-fast USB3.0 ports save sync time with data transfer rates up to 5 Gbps. Backward compatible with 2.0 USB/1.1 specifications.4. Anti-rubber sleeves for full stability can protect from scratches; The blue LED indicator shows the power status; Built-in surge protector secures your devices; Easy to set up. Plug & Play, Hot-swap.5. Exclusively for the Slim Unibody model released in November 2012 or later. (21 inch/27 inch/5K); Compatible with 10.6 and above, Windows 98SE /ME /2000 /XP /Vista /7/8 /10, Linux 2.4 or above. The ultra-thin premium aluminum 3-port USB 3.0 hub with SD/TF combo card reader is designed exclusively for. Adds three USB 3.0 ports and SD slots/TF card reader to the front side. There is no longer a need to twist cables to the ports vertically. Now you can easily access the USB ports and additional 2 card reader slots at an ergonomic angle Its sleek aluminum design perfect for your PC. It does not require any software or complicated installation process. With a slim fit, it saves valuable space on your desktop. System Requirements:10.6 and aboveWindows 98SE /ME /2000 /XP /Vista /7/8 /10Linux 2.4 or aboveUsage Alerts:2.4Ghz wireless devices, such as wireless keyboard and mouse adapters, may not work near 3.0 USB or USB devices. Connection to a 2.0 USB port is recommended. This hub is not intended as a standalone charger and does not charge a tablet or any other device with custom charging requirements. For a stable connection, devices connected to a 4-port 3.0 USB hub must not have a combined current of 5 volts 900 mAh. External hard drives should be connected to an external power source. Color: SilverMaterial: Aluminum Alloy Size: 108x34x11mm, Cable Length 115mmPackage Contents: 1 x USB 3.0 hub1 x User ManualOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.