JavaStation

The JavaStation was a Network Computer (NC) developed by Sun Microsystems between 1996 and 2000, intended to run only Java applications.
The hardware is based on the design of the Sun SPARCstation series, a very successful line of UNIX workstations. 
The JavaStation, as an NC, lacks a hard drive, floppy or CD-ROM drive. It also differs from other Sun systems in having PS/2 keyboard and mouse interfaces and a VGA monitor connector.
Models.
There were several models of the JavaStation produced, some being pre-production variants produced in very small numbers.
Production models comprised:
Models produced only as prototypes or in limited numbers included:
In addition, Sun envisioned a third-generation "Super JavaStation" after "Krups", with a JavaChip co-processor for native Java bytecode execution. This doesn't appear to have been produced.
The JavaStation concept was superseded by the Sun Ray series of thin client terminals.
Operating systems.
The JavaStation comes with JavaOS in the flash memory, but it is also possible to install Linux or NetBSD on the JavaStation.