SD card/TF card/USB Three interfaces transmit simultaneously Comes with hanging buckle Compact and easy to carry Speed doubled, speeding up again and again 4.0 high-speed transmission, with a theoretical transfer rate of up to 312MB/s; a 1GB file can be transferred in approximately 3 seconds Built-in safety circuit protection to prevent overcurrent and short circuits.This can cause damage to the memory card and data loss Product name:Card Reader 4.0 Theoretical transmission rate:(Max)312MB/s Supported read types:SD card, TF card, USB port *Supports SD card and TF card 4.0 and is backward compatible. Supported interface types:USB-C,USB-A theoretical support capacity:2TB (The product printed words may vary depending on the batch, but this does not affect use) Color: Black Material: Aluminum Alloy Package Contents: 1*USB4.0 Card Reader