Description1. Easy expansion Turn one USB port into four, including support for wireless and MIDI devices.^2. Housing made of solid aluminum alloy Better heat dissipation than PVC ensures a long service life Aluminum housing design is ideal for new laptops with USB port.^3. Super Speed Transmission: USB 3.0 Hub supports Super Speed data transmission up to 5 Gbit / s (at full speed), 10 times faster than USB 2.0 and the connection is compatible with USB A 2.0 and lower. With the adapter you can quickly access any file from your USB stick, smartphone, SD card, micro SD card, keyboard, mouse to the MacBook Pro.^4. Slim and Elegant Slim, light design thanks to the aluminum case, which fits perfectly with modern computers and improves all settings.^5. Intelligent temperature control with integrated smart chips and exclusive multiple protection systems to avoid overcurrent, overvoltage, short circuit and high temperatures for maximum safety.