Compatibility Matrix
| System Software | 7.1.x | 7.5.x | 7.5.2 | 7.5.3 | 7.5.5 | 7.6 | 7.6.1 | 8.0 | 8.1 |
| Open Transport |
| OT 1.0.5 | - | - | Yes | No | No | No | No | No | No |
| OT 1.0.6 | - | - | Yes | No | No | No | No | No | No |
| OT 1.0.8 | - | Yes | Yes | Yes | Yes | No | No | No | No |
| OT 1.1 | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| OT 1.1.1 | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| OT 1.1.2 | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes |
| OT 1.2 | No | No | No | No | No | No | No | Yes | No |
| OT 1.3 | No | No | No | No | No | No | No | No | Yes |
| OT 1.3.1 | No | No | No | No | No | No | No | No | Yes |
Notes:
1) Open Transport is supported on system software versions 7.1, 7.1.1, 7.1.2, 7.5.3, 7.5.5 or later. System software version 7.5.3 or later is recommended. No other system software versions are supported.
2) Open Transport 1.1 is not compatible with Power Macintosh or Performa 5200/5300/6200/6300 desktop computers.
3) Mac OS 7.6 installs Open Transport 1.1.1.
4) OT 1.3 Read Me incorrectly refers to the Read Me "About OT 1.2".