The MFC-7840W offers everything you need in a monochrome laser all-in-one for your home office or small sized business. It features an elegant black color scheme while adding a built-in 802.11b/g wireless network interface, PCL6 and BR-Script3 print emulations, a faster fax modem (33.6K bps Super G3), 4-day memory backup and an LCD backlit display for easy viewing. Use the document glass to scan pages directly to your e-mail application or to a single PDF file using the ADF. You can print, scan or send faxes wirelessly, as well as having the option to install the MFC on a wired network or to connect locally to a single computer via USB. A foldout rear output tray allows for a straight-through paper path and is ideal when using the single-sheet bypass slot for printing envelopes or thicker media. USB, Ethernet & 802.11b/g Standard Wireless Interfaces PCL6 & BR-Script3 Emulation 33.6K bps Fax Modem Speed External TAD interface Call Waiting Caller ID Ready Distinctive Ring Detection Ready 208 Total Auto Dial Locations 258 Broadcasting Locations Reduction/Enlargement - 25% - 400% Interpolated Scan Resolution - Up to 19200 x 19200 dpi Optical Scan Resolution - 600x2400 dpi 48-bit Input Color Scan Depth Export TIFF / BMP / MAX / JPG / PDF Formats Scan To Email, Image, OCR, File, and FTP Paper Handling Size - Letter, Legal, Executive, A4, A5, and B5 Wireless Network Security - WEP 64/128, WPA-PSK (TKIP), WPA2-PSK (TKIP & AES), and LEAP (CKIP) ADF Sheet Weight - 17 - 24 pounds ADF Input Paper Tray - 5.8x5.8 to 8.5/14 Sheet Weight - 16 - 28 pounds Machine Noise (Standby/Operating) - 32 dBA / 53 dBA Unit Dimensions - Width 16.9 x Depth 15.6 x Height 12 Unit Weight - 24.5 pounds Manufacturer's One year limited warranty