These are Brand New!!!  They come with nothing else in the box.  No cabling, rails or documentation.

This is a 12 port FDR InfiniBand Short depth Switch.  12 QSFP ports, 2 power supplies.

New / Sealed.  I opened this one for picture's, all the rest are factory sealed!

These are running an EMC operating System not the Mellanox O.S.  It can be restored back to the Mellanox O.S., but I do not have the expertise to do that or how to tell you to accomplish it.  It is a difficult task from what I understand. 

So, unless you need the version that runs the EMC operating system - do not buy these - unless you know how to convert back to the Mellanox O.S.