Our take
The Canon imageCLASS MF451dw is a mono multifunction printer for offices that handle both outgoing documents and incoming paper. Canon identifies item code 5161C013 and documents print, copy, scan and Super G3 fax, plus automatic duplex printing and a 50-sheet single-pass duplex document feeder. Wi-Fi, Gigabit Ethernet and USB cover common connection layouts. Its 34 ppm Letter rating and 750–4,000 page recommended monthly range are useful planning points. The feature mix is strongest when staff will use fax and two-sided document capture, not when the need is a basic personal printer.
A small office that regularly prints, copies, scans and faxes monochrome documents and wants automatic duplex on output and ADF scanning..
Skip it if color output is required, if the office only needs a simple print engine, or if the planned monthly load is far beyond Canon's recommendation.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Canon documents print, copy, scan and Super G3 fax functions for the exact item code.
- The 50-sheet single-pass duplex ADF can scan both sides of multipage originals in one pass.
- Automatic print duplex, Wi-Fi, Gigabit Ethernet and USB support a connected paper workflow.
What to weigh up
- The MF451dw is monochrome and cannot produce color pages.
- Its 34 ppm figure is a manufacturer rating, not a guarantee for every job or used machine.
- A buyer who does not use fax or scanning may be paying for workflow features that a printer-only model avoids.
The key details
| Model covered | imageCLASS MF451dw (5161C013) |
|---|---|
| Main functions | Monochrome print/copy/scan/fax MFP |
| Print output | Up to 34 ppm Letter; 750–4,000 recommended pages/month |
| Two-sided printing | Automatic print duplex; 50-sheet single-pass duplex ADF; Wi-Fi and Gigabit Ethernet |
Performance figures are manufacturer claims. Source checked October 9, 2026. Regional models and included accessories can differ.
What the features mean for you
Use the functions that make it an MFP
Canon lists print, copy and scan as core functions and documents Super G3 fax in the send specifications. That combination can keep common office paper tasks at one station: staff can print a document, copy an original, capture pages to a computer or send a fax. It is a meaningful difference from the Canon D570, which lacks documented fax. If the routine is only digital printing, a single-function model may be a simpler fit; the MF451dw's additional workflow matters when those jobs recur.
Scan both sides through the feeder
The exact source lists a 50-sheet single-pass duplex automatic document feeder and supports two-sided scan media. It can stage a set of originals and capture both sides without having the user turn each page and feed it again. That helps with double-sided forms and multi-page packets. Check the feeder rollers and scan path on a used machine, and confirm the job's paper sizes and weights fit Canon's limits. The source documents capability, not the working condition of a particular listing.
Print two-sided packets automatically
Canon lists automatic standard duplex printing and up to 34 pages per minute on Letter paper. The duplex feature reduces manual handling on reports and policies; the rated speed gives a rough class for print planning but is not a measured promise for every file. Canon recommends 750–4,000 pages per month, which is a more useful workload band than a maximum duty-cycle number. A queue far above that range should be compared with a heavier-duty device.
Connect it to the office's network
The MF451dw lists USB 2.0, Gigabit Ethernet and Wi-Fi, plus Wi-Fi Direct. Ethernet suits a fixed shared workgroup printer; Wi-Fi can make placement easier when cable access is limited; USB remains an option for direct setup. Choose the path that fits the existing network and verify it on any used unit. The interfaces do not guarantee that a printer is configured for the office's security settings or that a particular device's radio and ports still work.
Keep the output expectation monochrome
Canon identifies the MF451dw as a monochrome laser MFP. It handles text and other black output, but it is not suitable for color presentations or forms that rely on colored marks. The 350-sheet standard input, split between a 250-sheet cassette and a 100-sheet multipurpose tray, supports regular office paper handling. That is a practical middle ground for a small workgroup, but compare a larger capacity if several people share a busy queue and frequent reloads would interrupt work.
What else to compare
The Canon D570 is a mono copy/scan alternative with Wi-Fi and duplex printing but no documented fax or duplex ADF. The Pantum M7102DW adds an ADF but does not list fax.
Before you buy
Does the MF451dw include fax?
Yes. Canon's technical specifications list Super G3 fax for the exact MF451dw item code 5161C013.
Can the ADF scan both sides automatically?
Canon documents a 50-sheet single-pass duplex ADF and two-sided scanning for the MF451dw.
Does it print automatically on both sides?
Yes. Canon lists automatic standard duplex printing for the MF451dw.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Canon U.S. MF451dw exact item code and technical specifications ↗ — checked October 9, 2026.
- Canon U.S. MF451dw specifications: item code, fax, print/copy/scan, duplex, ADF, interfaces and volume ↗ — checked October 9, 2026.
The decision
Choose the MF451dw when mono fax, automatic duplex printing and two-sided ADF scanning belong in the same office workflow. Its color limit and workload range are clear trade-offs.
Is it the right fit?
Check the exact model and today’s offers on Amazon.