The CR317 is a contact smart card reader that combines both smart card and SIM card functionalities. It has a smart card slot and a SIM card slot, supporting both single and simultaneous use. It supports A, B, and C class (5V, 3V, and 1.8V) smart cards compliant with ISO 7816 standards. It communicates with PC environments through a USB interface compatible with different operating systems. USB 2.0 standard Supports hot swapping Smart card/SIM card, dual slot design High-quality socket, supports at least 100,000 insertions and removals AU9580 main control chip Specifications: Model: CR317 Interface: USB 2.0 Supported card types: Smart card + SIM card dual slot design Cable length: 90cm Product dimensions: 897210mm Weight: 64g System support: Compatible with Windows XP, Windows 7/8/8.1/10, Windows Vista, for Mac OS Notes: Due to differences in monitors and lighting effects, the actual color of the item may slightly differ from the color displayed in the pictures. Thank you for your understanding. Please allow a measurement deviation of 1-2cm due to manual measurement.