3B1 Desktop Workstation
The 3B1, also known as the PC7300 or UNIX PC, was a desktop workstation computer based on the Motorola MC68010 microprocessor, running an operating system from Convergent Technology (based on Unix System V Release 2).
In spite of the labeling and common AT&T heritage, the 3B1 was essentially unrelated in hardware or software to the 3B2 line.
Read more about this topic: 3B Series Computers