DS-940DW
Specifications
General Specifications
| Memory Capacity | Standard | DSmobile DS-640: 128 MB DSmobile DS-740D: 256 MB DSmobile DS-940DW: 512 MB | 
| Power Source | DSmobile DS-640/DSmobile DS-740D: USB bus-power DSmobile DS-940DW: USB bus-power/rechargeable Li-ion battery | |
| Power Consumption *1 | Scanning | DSmobile DS-640: Approx. 2.6 W DSmobile DS-740D: Approx. 3.3 W DSmobile DS-940DW: 
 | 
| Ready | DSmobile DS-640: Approx. 1.4 W DSmobile DS-740D: Approx. 1.4 W DSmobile DS-940DW *2: 
 | |
| Power Down | 
 DSmobile DS-640: Approx. 0.01 W DSmobile DS-740D: Approx. 0.01 W DSmobile DS-940DW *2: Approx. 0.11 W | |
| Dimensions | DSmobile DS-640:  DSmobile DS-740D:  DSmobile DS-940DW:  | |
| Weights | DSmobile DS-640: Approx. 466 g DSmobile DS-740D: Approx. 646 g DSmobile DS-940DW: Approx. 699 g | |
| Temperature | Operating | 5°C to 35°C *3 | 
| Storage | -20°C to 60°C | |
| Humidity | Operating | 20% to 80% | 
| Storage | 10% to 90% | |
Document Specifications
| Paper Type | Photo, Paper, Card (embossed), Business Card, Receipt | 
| Document Size | DSmobile DS-640: 
 DSmobile DS-740D/DSmobile DS-940DW: 
 | 
Scanner Specifications
| Colour/Monochrome | Yes/Yes | |
|  TWAIN Compliant | Windows | Windows 7 (SP1) / Windows 8.1 / Windows 10 Windows Server 2012 / Windows Server 2012 R2 / Windows Server 2016 / Windows Server 2019 | 
| WIA Compliant | Windows | Windows 7 (SP1) / Windows 8.1 / Windows 10 | 
| ICA Compliant | Mac | macOS v10.12.x / v10.13.x / v10.14.x *1 | 
| Colour Depth | Input | 48 bit colour processing | 
| Output | 24 bit colour processing | |
| Resolution | Interpolated | Up to 1200 x 1200 dpi | 
| Optical | Up to 600 x 600 dpi | |
| Scanning Width | Up to 215.9 mm | |
| Greyscale | 256 levels | |
| Max. Speed | See your model’s page on your local Brother website. | |
Rechargeable Li-ion Battery (DSmobile DS-940DW)
| Charging Time | 2.6 hours | 
| Continuous Standby Time |  10 minutes (when the Auto Power Off feature is active) | 
| Scannable Number of Sheets (WLAN ON) | 200 sheets | 
| Scannable Number of Sheets (WLAN OFF) | 320 sheets | 

- The numbers described in the Rechargeable Li-ion Battery table may differ depending on the documents scanned and on environmental factors, such as temperature and the charging and discharging method.
- For longer battery life, turn the scanner off when you are not using it.
Interface Specifications
| USB | USB 3.0 *1 Use a USB 3.0 cable (Standard A/Micro B) or USB 2.0 interface cable (Standard A/Micro B) that is no more than 2.0 metres long. | 
| Memory Card  (DSmobile DS-940DW) | microSD memory card: 2 GB - 32 GB (SDHC) | 
| Wireless LAN  (DSmobile DS-940DW) | IEEE 802.11b/g/n (Infrastructure mode) IEEE 802.11g (Wireless Direct) | 
Your machine has a USB 3.0 interface. The machine can also be connected to a computer that has a USB 2.0 interface.
Third-party USB ports are not supported.
Network Specifications (DSmobile DS-940DW)
| Wireless Network Security  | WEP 64/128 bit, WPA-PSK (TKIP/AES), WPA2-PSK (AES) | 
| Setup Support Utility  | WPS WLAN Assistant | 
Supported Protocols and Security Features (DSmobile DS-940DW)
| Protocol (IPv4)  | DHCP, APIPA (Auto IP), WINS/NetBIOS, DNS Resolver, mDNS, SNMPv1/v2c, ICMP, Web Services (Scan), HTTP/HTTPS server, LLMNR responder, SNTP Client | 
| Protocol (IPv6)  | RA, DNS Resolver, mDNS, LLMNR responder, Web Services (Scan), SNTP Client, HTTP/HTTPS server, ICMPv6 | 
| Network Security (Wireless)  | SSL/TLS (HTTPS) | 
| Wireless Certification  | Wi-Fi Certification Mark License (WPA™/WPA2™ - Personal), Wi-Fi Protected Setup™ (WPS) Identifier Mark License | 


