Before Commodore bought up the original Amiga, Inc, they were developing the CBM-900 line for businesses to use. There were two machines. The Hi-Profile, and the Lo-Profile. The High-profile was meant to be more like a server, while the low-profile was more like a client. Both used a Z8000 CPU and ran Coherant Unix. As with some of Commodore's other lines, the 900 line had several names including the 464 and Z-series. The version of Coherant provided with the 900 didn't have a TCP/IP stack.