Omnikey CardMan 6121 USB CCID reader (2FF sized)
The Omnikey CardMan 6121 is a USB smart card reader directly for the plug-in type (2FF sized) SIM card.
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 6121 offers a single 2FF card slot. If you need a reader for a full-sized chip card, please check the Omnikey CardMan 3121 as alternative.