Card reader. It has been stored at home with little use. Brand: Cemoy Media Type: MicroSD, SD Card Connectivity Technology: USB Features: Supports various IC cards, compact size, plug & play Color: Black Compatible Devices: Computer 【Easy Connection Setup & Supported Devices】No need to download drivers separately for Windows 7/8/10. It can be recognized by plugging it into a PC. CCID, PC/SC, WHQL. Compatible with Windows 7/8/10 (32bit/64bit), XP, Vista, Win 2000, XP, CE, Linux, and Mac OS X. If it is not recognized on MAC OS, first close "autrun" and then open and install "Mac installer". Java is required for MAC users. Please install Java first. 【IC Card Compatibility】Supports bank, post office, and chip cards issued nationwide. Can be used for CAC (Common Access Card), government ID, and national ID. Operable with all contact smart cards such as online banking and digital signature applications: AKO, OWA, DKO, JKO, NKO, ActivClient, BOL, GKO, Marinenet, AF Portal, Pure Edge Viewer, ApproveIt, DCO, DTS, LPS, Disa Enterprise Mail, etc. When reading contact IC card personal information and financial information, it is necessary to use it in conjunction with a third-party system. For example, if you have not installed financial software or other software, you will not be able to automatically read the information on large cards. 【Product Specifications】USB 2.0 Full Speed (480Mbps) Material: High-quality ABS Input Power: DC5V Certification Standards: PIV, EMS, ISO-7816 & EMV2 2000 Level 1, FCC, VCCI, CCID, Microsoft WHQL. (Note: Does not support Chromebook OS)