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| Specification | BrotherDS-740D | BrotherDS-640e |
|---|---|---|
| Automatic duplex output | Conflicting source valuesSource | OptionalSource |
| Color capability | ColorSource | Not recorded |
| Declared print speed | Conflicting source valuesSource | 16 ipm or mppmSource |
| Default sleep delay | 10 minSource | 10 minSource |
| ENERGY STAR partner | Brother Industries, Ltd.Source | Brother Industries, Ltd.Source |
| Marking technology | N/A (Scanner)Source | N/A (Scanner)Source |
| Off-mode power | 0 WSource | Not recorded |
| Page format class | StandardSource | StandardSource |
| Product type | ScannersSource | ScannersSource |
| Sleep-mode power | 1.2 WSource | 1.2 WSource |