A FIPS 201 Compliant USB smart card reader, the ACR39U-U1 combines sophisticated technology and modern design to meet stringent requirements in smart card-based applications. Furthermore, the ACR39U-U1 is a TAA Compliant CAC/PIV reader, so you can be assured your reader is coming from a TAA designated country. The ACR39U-U1 supports ISO-7816 Class A, B and C (5V, 3V, 1.8V) cards. Please note, if you are using this reader for CAC/PIV use, you may need to purchase software depending on your computer and operating system. Please don't hesitate to reach out to us if you need some clarification.