Multifunctional 2-in-1 SIM Smart Card Reader Fit for Tax Declaration CAC ID Card Reader Product Information It is a contact smart card reader, smart card and SIM card are combined into one, with a smart card slot and a SIM card slot, which can be used separately or at the same time. Supporting ISO 7816-compliant Type A, Type B, and Type C (5V, 3V, and 1.8V) smart cards, it communicates with the PC environment through a USB interface compatible with different operating systems. System support: WindowsXP, Windows7/8/8.1/10, Windows Vista, Mac OS Features USB2.0 Interface Support hot swap Smart card/SIM card, dual card slot design High-quality socket, which can support at least 100,000 times of card insertion and removal Package included: 1 x Smart Card Reader Note Please allow 2-3 cm difference due to manual measurement. Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understanding(1 inch = 2.54 cm)