Product comparison
M521dn
A8P79A
M521dw
A8P80A
Paper handling
Tray 1 (100-sheet capacity)
Tray 2 (500-sheet capacity)
Optional Tray 3 (500-sheet
capacity)
Standard output bin (250-sheet
capacity)
Rear output bin (50-sheet
capacity)
Automatic duplex printing
Supported operating
systems
Windows XP, 32-bit, Service
Pack 2 and greater
Windows Vista, 32-bit and 64-
bit
Windows 7, 32-bit and 64-bit
Windows 2003 Server (32-bit,
Service Pack 1 or greater), print
and scan drivers only
Windows 2008 Server (32-bit,
64-bit, and R2), print and scan
drivers only
Mac OS X v10.6.8 and later
Connectivity
Hi-Speed USB 2.0
10/100/1000 Ethernet LAN
connection
Wireless network connection
Memory
256 MB RAM
Control-panel display
Color graphical touch screen
Prints 40 pages per minute (ppm)
on A4-size paper and 42 ppm
on Letter-size paper
Walk-up USB printing (no
computer required
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Chapter 1 Product introduction
ENWW
M521dn
A8P79A
M521dw
A8P80A
Copy
Copies at up to 20 ppm
Copy resolution is 300 dots per
inch (dpi)
This document feeder holds up to
50 pages and supports page
sizes from 127 to 356 mm (5 to
14 in) in length and from 127 to
216 mm (5 to 8.5 in) in width
Flatbed scanner supports page
sizes up to 297 mm (11.7 in) in
length and up to 215 mm (8.5
in) in width
Automatic duplex copying
Scan
Scans in black and white with
resolution up to 1200 dpi from
the flatbed glass
Scans in color with resolution up
to 300 dpi from the document
feeder and up to 600 dpi from
the flatbed glass
Automatic duplex scanning
Scan to Email (no software
required)
Scan to Network Folder (no
software required)
Walk-up USB scanning (no
computer required)
Fax
V.34 with two RJ-11 fax ports
ENWW
Product comparison
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