1. CAC smart card adapter? Support for DOD military cards, CAC cards, smart cards for smart card readers, which are issued at support banks, post offices and across the country. Applicable DCO, DTS, LPS, Disa Enterprise-Mail or Micro SD / TF / Micro SDXC / Micro SDHC etc. 2. Multiple card types? 5V, 3V and 1.8V smart cards, ISO 7816 memory cards of classes A, B and C. - SD card / micro SD card / SDHC / SDXC / MMC RS amp; 4.0 / SIM card . 3. Security? Chip card reader works with practically all contact chip cards and PC operating systems: for Windows 98 / Me / 2000 / NT 4.0 / CE / XP / Vista / 7/8 / 10, for Linux, Mac OS X etc. 4. Smartcard detection? Motion detection with automatic switch-off Automatic detection of the smartcard type short circuit and thermal protection. 5. Compact size?: The USB card reader 3.0 has a cap that protects the USB port from dust and dirt. Thanks to its optimal width, the narrow card reader offers enough space for the use of an adjacent USB port. The wireless design is useful to avoid cable clutter and make your desk cleaner. In addition, the friendly keychain design ensures comfort and security when carried.