1. Material: aluminum alloy + ABS 2. Compatible with USB1.0/2.0/3.0 3. Support BC 1.2/USB/Type-C+TF/SD card/3.5mm audio 4. Support DC power supply for other USB devices DC power plug-in after connecting PC or other devices to this hub 5. Fast heat dissipation, stable performance, compact and portable 6. The interface is plug-resistant, plug and play, responsive 7. Small and light, easy to carry