1.Ultra-thin Upgraded Version: Long-lasting premium aluminum material designed to complement products. No more banding yourself to strange angle just for plugging a USB device onto your . 2.Brings three more USB ports and SD/TF card to the front side. Supports SD, SDXC (up to 2TB), SDHC, Micro-SD, Micro-SDXC, Micro-SDHC cards. 3.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. 4.Anti- rubber sleeves for complete stability can protect your from scratches; Blue LED indicator reveals the power status; Built-in surge protector safeguards your devices; Easy to set up. Plug & Play, Hot-Swappable. 5.Exclusively designed for the Slim Unibody model released November 2012 or later. (21 inch / 27 inch / 5K); compatible with 10.6 & higher, Windows 98SE /ME /2000 /XP /Vista /7/8 /10, Linux 2.4 or above. ultra-thin premium aluminum 3-Port USB 3.0 hub with SD/TF card reader combo is exclusively designed for . It adds three USB 3.0 ports and SD/TF card reader slots to the front side of your . There is no more need to twist cables to get to the ports vertically. Now you can easily access USB ports and additional 2 slots card reader at an ergonomic angle! Its sleek aluminum design the perfect complement to your computer. It does not require any software or complicated installation process. With a slim design, it saves you precious desktop space. System requirements: 10.6 & higher Windows 98SE /ME /2000 /XP /Vista /7/8 /10 Linux 2.4 or above Usage Alerts: 2.4Ghz wireless devices, such as wireless keyboard and mouse adapters, may not work in close proximity to USB 3.0 devices or . Connecting to a USB 2.0 port is recommended. This hub is not designedto as a standalone charger and will not charge an tablet or any other device with non-standard charge requirements. For a stable connection, the devices connected to the 4-Port USB 3.0 Hub must not exceed a combined current of 5 volts 900 mAh. External hard-drives should be connected to an external power source. Colour: silver Material: aluminum alloy Size: 108 x 34 x 11mm, cable length 115mm Package Contents: 1 x USB 3.0 hub 1 x User Manual Only the above package content, other products are not included. Note: Light 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.