| Component | Code | No. | Remarks |
|---|---|---|---|
| FCU | D3D9-01 (NA) D3D9-02 (EU) D3D9-03 (AP) D3D9-05 (CHN) | 5 | Included with the fax unit |
| GWFCU I/F | 6 | ||
| Speaker | 4 | ||
| Expansion Memory | D3D9-12 | 7 | Optional |
| CCU I/F Board | D3D9-07 (NA) D3D9-08 (EU/AP) | 1 | Included with the optional G3 unit |
| SG3 Board | 2 | Optional | |
| SG3 Board (2nd) | 3 | Optional |