Add up to 4 devices with the efficient, effectual Sabrient 4-Port USB 3. 0 hub. The thin, lightweight design makes the Sabrient 4-Port USB 3. 0 hub a great travel companion to expand your laptop's USB 3. 0 port into four. Fully backwards compatible with the USB 2. 0/1. 1 products. Additionally, each port has its own power switch, allowing for individual port control. with SuperSpeed USB 3. 0, you can now transfer data at up to 10 times the speeds of the older USB 2. 0 standards. Speeds of 5Gbps are a vast improvement over USB 2. 0'S 480Mbps top speed. The Sabrient 4-Port USB hub utilizes the most advanced technology, but it is also backwards compatible, allowing you the capability of using USB 2. 0/1. 1 products If need be. please note: 2. 4GHz wireless devices, such as wireless keyboard and mouse adapters, may not work in close proximity to USB 3. 0 devices or hubs. Connecting to a USB 2. 0 port is recommended. 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 mash. External hard-drives should be connected to an external power source. This 4-Port USB 3. 0 hub will not charge your devices, It will only sync.