This is the launcher icon to connect the UEA HPC cluster (hpc.uea.ac.uk).
It can also be opened by typing UEAHPC in the dash.
From the command line :
ueahpc login - takes you to login node
ueahpc Xinteractive - takes you to an interactive session
This opens the window :
It enables you login to the login node or directly on to an interactive session.
You can also easily move files between hpc and your workstation using the files tab.