Omnikey CardMan 3121 USB CCID interface

The Omnikey CardMan 3121 is a USB smart card interface device. Colloquially these devices are also called "Card Reader", despite the fact that they can read and write as far as permitted by the card used.

It is compatible with the USB CCID class device specification and can be used without any vendor drivers by Free / Open Source software such as libccid and OpenCT.  Having said that, it of course also works with vendor-supplied PC/SC drivers on Windows, as well as Mac OS X.

The Omnikey CardMan 3121 offers a single full-sized card slot. So please make sure to obtain a mechanical adapter separately if you want to use it with plug-in sized SIM cards.