[1] The B21 models are rebadged Convergent Technologies AWS workstations incorporating an Intel 8086 CPU.

They run the BTOS operating system, which is a version of Convergent's CTOS, as well as CP/M and MS-DOS.

The B22 included a mass storage unit with a capacity of up to 60 MB.

[2] The Burroughs B25, a rebadged Convergent NGEN system with an Intel 80186 CPU, was introduced in 1983.

A cluster only (no storage) 80186-based B24 was later released and commonly used by bank tellers.