| GWFS Model # | 90si | 390 | 690 |
| Type | Gateway | Low Vol. Desktop System |
Mid/High-Vol. Desktop System |
| Spec sheet (PDF) free PDF reader (external) |
90si  |
390 (33K) |
690 (36K) |
| Mulit-Functional (Print/Copy/Scan) |
Depends on Fax | Yes | Yes |
| TEMPEST | No | No | No |
| Mil-Std-188 161 | Yes | Yes | Yes |
| SCIP Async Protocol | Yes | Yes | Yes |
| Nonsecure Faxing | Yes | Yes | Yes |
| Paper Type | n/a | Plain | Plain |
| Includes 90si? | n/a | Yes | Yes |
| Document Feeder | n/a | 30 Page Automatic | 50 Page Automatic |
| Memory | n/a | 32 MB Volatile | 64 MB Volatile |
| Original Document Width | n/a | 8.5″ | 8.5″ |
| Approx. Size (HxWxD) inch | 1x5x5 | 10x14x14 | 19x20x18 |
| Weight (lbs.) | 1 | 16.2 | 37 |
| Power | 110/220 VAC(Auto) | 110 VAC | 110 VAC |
