1. Material: ABS + Braided Cable 2. USB Transmission Standard: USB 3.0/Type-C 3.1 3. Compatible Systems: Windows/Mac/iOS/Android/Linux/HarmonyOS/Chrome OS 4. Can hold up to 5 SD/TF cards simultaneously 5. Uses USB 3.0 data interface, 5Gbps high read/write speeds for efficient office work 6. Integrated high-speed data transmission chip, supports simultaneous read/write and data transfer/copying 7. ABS shell, large-area efficient heat dissipation, safe and won't damage cards 8. USB/Type-C dual interface, universal for mobile phones/tablets/computers