From SCM Microsystems:
Update your SmartCardReader USB drivers for model SCR3310.SCM's SCR3310 and SCR3310v2.0 are small and ergonomic USB smart card readers, with backside mounting holes. The readers are ISO 7816 compliant, and can be used for cards in ID 1 card format.
This installer contains PC/SC driver and CT-API library and can be used for SCR531 USB, SCR331 CCID, SCR333, SCR335, SCR355, SCR338, SCR3310, SCR3311, SCR3320, SCR3340, @MAXX Family and SCT3511
Business Card Reader For Mac
SCR331 and SCR531 users note that only readers that have CCID firmware are supported. Readers that have firmware Rev 2.0 and above are CCID. This driver may also be used with the following third party products: Goldtouch ErgoSecure SC 2.0 keyboard, Datakey DKR830. If the host is running Windows 98 SE or Windows Me, ensure that Microsoft Smart Card Base Components are installed on the host before atempting to install the drivers.

Cac Card Reader For Mac 2018 Collections
Information for apple mac users only NOTE: For whatever reason, in order to access some of the Navy CAC-enabled sites, you must CANCEL when it first asks for your PIN. After canceling, you can then choose your certificate, and it will give you a second opportunity to enter your PIN.
