MFC-7840W

Laser All-in-One with Wireless Networking

Printers, AIOs, & Fax Machines

Discontinued Product

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Connectivity & Compatibility

Mobile Device Compatibility‡
Brother™ iPrint&Scan free app download for wireless printing (JPEG, PDF, web page & e-mail) and scanning to your Apple®, Android™ or Windows® Phone 7 (JPEG only) mobile device
Optional Interface(s)
No
Standard Interface(s)
USB‡, Ethernet & 802.11b/g Wireless Interfaces
Standard Network Features†
Printing, Scanning, PC Fax
Standard Network Interface
Network (Ethernet) I/F
Supported Network Protocols (IPv4)
ARP, RARP, BOOTP, DHCP, APIPA (Auto IP), WINS/NetBIOS, DNS resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, IPP, FTP Server, FTP Client, POP before SMTP, SMTP AUTH, APOP, TELNET, SNMPv1, HTTP Server, TFTP Client and Server, SMTP Client, ICMP, Web Services
Supported Network Protocols (IPv6)
NDP, RA, DNS Resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port 9100, IPP, FTP Server, FTP Client, POP before SMTP, SMTP AUTH, APOP, TELNET, SNMPv1, HTTP Server, TFTP Client and Server, SMTP Client, ICMPv6, Web Services

Copy

Black Copy Speed (max. cpm)
23cpm Black
Copying Capability
B/W Copying
Design Style
Flatbed
Document Glass Size
Letter / A4
N in 1 Function
2in1 / 4in1
Poster Function
No
Reduction/Enlargement
25% - 400%
Sorting Function
Yes
Stand-alone Copying
Yes

Dimensions & Weights

Carton Dimensions (W"xD"xH")
21.7" x 20.1"x 20.5"
Carton Weight (lbs)
31.2
Unit Dimensions (W"xD"xH")
16.9" x 15.6" x 12"
Unit Weight (lbs)
24.5 lbs.

Fax

Best Transmission Speed (approx. sec./page)‡
Approx. 2 seconds per page
Broadcasting (# of locations)
Yes (258 locations)
Call Waiting/ Caller ID/ Distinctive Ring Ready‡
No/Yes/Yes
Document Memory Backup
Yes
External TAD Interface
Yes
Fax Modem Speed
33.6K bps Fax Modem
Fax Page Memory (max. pages) ‡
Up to 600 page fax memory
Faxing Capability
B/W Faxing
Fax/Telephone Switch
Yes
Out-of-Paper Reception
Yes
PC Fax Capability (send/receive)†
Yes
Quick Scan/Memory Transmission (approx. sec/page)‡
Approx. 2.5 sec/page
Total Auto Dial Locations
208 locations

General

LCD Display
Yes (monochrome)
LCD Size (characters/lines)
16 characters / 2 lines
Maximum Monthly Duty Cycle‡
10,000 printed pages
Optional Memory (MB)
No
Recommended Monthly Print Volume‡
250 to 2,000 pages
Standard Memory
32MB Memory
Toner Save Mode
Yes

Paper Handling

Automatic Document Feeder Capacity (max. pages)‡
35-Page ADF
Maximum Input of ADF (Width/Height)
8.5"/14"
Minimum Input for ADF (Width/Height)
5.8"/5.8"
Optional Paper Trays (capacity)
No

Security Features

Security Functions
Secure Function Lock, Setting Lock, Secure Print
Wireless Network Security
WEP 64/128, WPA-PSK (TKIP), WPA2-PSK (TKIP & AES), LEAP (CKIP)

What’s Included

Carton Contents‡
(1) Starter Toner Cartridge (yields approx. 1,000 pages‡)(1) DR360 Drum Unit (yields approx. 12,000 pages‡)User's GuideQuick Setup GuideAC Power CordTelephone Line CordSoftware CD-ROM for Windows®Software CD-ROM for Mac®
"In-box" Consumables/Yield‡
(1) Starter Toner (1,000 pages)(1) DR360 (12,000 pages)
Warranty
1 Year Limited
  1. If free shipping is indicated above: free ground shipping on orders over $49.99 within the contiguous U.S. See Shipping Policy for details and conditions.

*Prices May Vary

Contact Support

In order to best assist you, please use one of the channels below to contact the Brother support team.

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Call Support

1.877.BROTHER
(877.276.8437)

Available Monday - Friday, 9:00am to 9:00pm Eastern Time


Best for help with: 
• Wireless installation and troubleshooting
• Software and drivers 
• Printing, copying, scanning, faxing issues and errors

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Best for quick help with:
• Questions regarding basic machine operations and specifications
• Fax setup and operation
• Order status/Tracking information