The Indigo is an SGI graphics workstation. It's outstanding graphics performance, fast CPU and nice design were made much of the company's legendary reputation. The Indigo was available with R3000 processors; the later Indigo R4000 aka IP20 also came with am R4000 processor.
Siemens-Nixdorf was shipping an OEM version of the Indigo as the RW 320.
The Indigo is not supported.