The catch
Brother MFC-L5710DW
Legal is longer than the glass. Support for Legal-size printing and feeding leaves that flatbed limit as it is.
Side by side
Brother MFC-L5710DW vs MFC-L5915DW: Rated scan speed is equal, and 5915 adds legal glass
Quick verdict
The MFC-L5915DW is for legal-size originals that must lie flat, or eligible scan packets that regularly run 51 to 70 sheets. The MFC-L5710DW fits when ordinary packets stay at 50 sheets and you need a body 3.1 inches narrower. Duplex scanning is claimed at the same 60 black or 42 color images per minute on both, and each has 350-sheet standard input. What the larger model buys is glass size and feeder capacity, and not a higher stated scan rate.
Before you buy
Why, and what it costs you
Legal-size printing and a legal-size flatbed are separate purchases
A home business can print legal-size forms without trouble and still receive a creased or fragile original that should not go into an automatic feeder. On the 5915 a legal-size sheet lies on the 14-inch glass. The 5710 glass is shorter and cannot capture the full length in one placement, even though its feeder accepts legal-length paper. If all your legal originals are suitable loose sheets, using the feeder takes away the reason to buy the wider model.
Where this comes from
According to the US manual, the glass is 11.8 inches long on the 5710 and 14 inches on the 5915. The ADF path on both accepts up to 14 inches. Whether an original suits the feeder is a separate question from its length.
The catch
Brother MFC-L5915DW
Its body is 19.5 inches wide. Short scan packets get no higher rated scan speed and no extra standard print paper from it.
Brother MFC-L5710DW
- Why pick it
- A 3.1-inch narrower body is yours if the shorter glass and 50-sheet ADF cover your paperwork.
- Supported jobs get the same stated duplex scan rate as the 5915.
- The catch
- Legal is longer than the glass. Support for Legal-size printing and feeding leaves that flatbed limit as it is.
Brother MFC-L5915DW
- Why pick it
- Legal-size originals can lie on the documented 14-inch glass, so unsuitable sheets are not forced through a feeder.
- One load takes eligible 51- to 70-sheet packets.
- The catch
- Its body is 19.5 inches wide. Short scan packets get no higher rated scan speed and no extra standard print paper from it.
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What this page compares
A legal-size glass and a larger feeder come with the MFC-L5915DW, while rated scan speed is equal. Judge whether the wider body fixes the paperwork problem you really have.
These business monochrome all-in-ones both scan duplex in one pass, and either suits the same document-heavy office. The real choice is among desk width, legal-size originals and scan-stack capacity.
Which one fits
Pick the situations that sound like you
Your legal-size originals are too fragile to go through the feeder
The 5915 has the legal-length glass you need, and the 5710 glass is shorter.
- Brother MFC-L5710DW
- Not suitable
- Brother MFC-L5915DW
- Better fit
A typical two-sided packet runs to 30 sheets
Each takes the packet and quotes the same duplex scanning rate.
- Brother MFC-L5710DW
- Good
- Brother MFC-L5915DW
- Good
Eligible packets regularly come to 60 sheets
The 5915 spares you the split that the 50-sheet 5710 feeder forces.
- Brother MFC-L5710DW
- Caution
- Brother MFC-L5915DW
- Better fit
You want to fit more standard print paper into less width
Input is 350 sheets on each. The 5710 is narrower, but neither adds capacity without extras.
- Brother MFC-L5710DW
- Better fit
- Brother MFC-L5915DW
- Depends
In practice
Differences you will notice
Legal-size printing and a legal-size flatbed are separate purchases
A home business can print legal-size forms without trouble and still receive a creased or fragile original that should not go into an automatic feeder. On the 5915 a legal-size sheet lies on the 14-inch glass. The 5710 glass is shorter and cannot capture the full length in one placement, even though its feeder accepts legal-length paper. If all your legal originals are suitable loose sheets, using the feeder takes away the reason to buy the wider model.
How we worked this out
According to the US manual, the glass is 11.8 inches long on the 5710 and 14 inches on the 5915. The ADF path on both accepts up to 14 inches. Whether an original suits the feeder is a separate question from its length.
A bigger load does not speed up scanning once the load is in
When your usual stack is 20 to 40 sheets, both feeders hold it and both quote the same duplex scan rate. For that routine, moving up to the 5915 brings no documented scan-speed advantage. The advantage shows up with an eligible packet of 51 to 70 sheets, where it spares you the extra load that the 5710 needs. Pick the larger feeder to fit the stack you really handle, and not because the model number sounds faster.
How we worked this out
Each claims 60 black/42 color duplex ipm. For a 60-sheet supported packet the loads are ceiling(60/50) = 2 versus ceiling(60/70) = 1. The rate says nothing about total task time.
Buying the wider machine does not get you out of paper-refill trips
On a desk shared with a laptop and homework, the 5710 leaves 3.1 inches more width free than the 5915 does, before clearances. Standard boxes for both come with a 250-sheet main tray and a 100-sheet multipurpose tray. If fewer print-paper refills is your goal, buying the 5915 by itself will not get you there. Look at the right optional tray configuration or a model with larger input, instead of paying for a legal flatbed you will not use.
How we worked this out
19.5 - 16.4 = 3.1 inches. Standard input totals 250 + 100 = 350 sheets on both, and output is 150. Optional trays add cost and take more height.
Option A
Brother, MFC-L5710DW
MFC-L5710DW
A 3.1-inch narrower body is yours if the shorter glass and 50-sheet ADF cover your paperwork.
- Best for
- A 3.1-inch narrower body is yours if the shorter glass and 50-sheet ADF cover your paperwork.
Facts we checked
- An original that must lie flat: MFC-L5710DW glass handles originals up to 11.8 inches long. The ADF supports up to 14 inches.
- Two-sided packet scanning: 50-sheet one-pass duplex ADF. Rated duplex scan speed up to 60 black or 42 color images per minute, with advanced features off.
- Shared work surface: Closed body 16.4 x 18.1 x 17.6 inches. Standard paper input 350 sheets and output 150.
- Routine workload: Recommended monthly maximum 5,000 pages.
Option B
Brother, MFC-L5915DW
MFC-L5915DW
Legal-size originals can lie on the documented 14-inch glass, so unsuitable sheets are not forced through a feeder.
- Best for
- Legal-size originals can lie on the documented 14-inch glass, so unsuitable sheets are not forced through a feeder.
Facts we checked
- An original that must lie flat: MFC-L5915DW glass and ADF both support originals up to 14 inches long.
- Two-sided packet scanning: 70-sheet one-pass duplex ADF. Rated duplex scan speed up to 60 black or 42 color images per minute.
- Shared work surface: Closed body 19.5 x 18.6 x 19.1 inches. Standard paper input 350 sheets and output 150.
- Routine workload: Recommended monthly maximum 8,000 pages.
Spec by spec
Where they really differ
| Spec | Brother MFC-L5710DW | Brother MFC-L5915DW | In practice |
|---|---|---|---|
| An original that must lie flat | MFC-L5710DW glass handles originals up to 11.8 inches long. The ADF supports up to 14 inches. | MFC-L5915DW glass and ADF both support originals up to 14 inches long. | Check legal-size support on its own for printing, feeding and flatbed scanning. |
| Two-sided packet scanning | 50-sheet one-pass duplex ADF. Rated duplex scan speed up to 60 black or 42 color images per minute, with advanced features off. | 70-sheet one-pass duplex ADF. Rated duplex scan speed up to 60 black or 42 color images per minute. | The 5915 holds more sheets, yet the quoted scanning rate is the same in the stated modes. |
| Shared work surface | Closed body 16.4 x 18.1 x 17.6 inches. Standard paper input 350 sheets and output 150. | Closed body 19.5 x 18.6 x 19.1 inches. Standard paper input 350 sheets and output 150. | Your originals could justify the wider scanner. The print-paper supply does not. |
| Routine workload | Recommended monthly maximum 5,000 pages. | Recommended monthly maximum 8,000 pages. | Sustained output volume is its own reason to pick the larger model. |
Trade-offs
What each pick costs you
With Brother MFC-L5710DW
- Print stock heavier than 28 lb bond has to go through the documented half-speed, straight-output route, which needs rear access.
With Brother MFC-L5915DW
- Its larger body needs room for the lid and paper access, and it is still a black-and-white printer.
Change of plan
When the answer changes
Packets stay within 50 sheets and no original requires legal-size glass
Go with Brother MFC-L5710DW. The 5710 handles the task in a narrower body at the same stated scan rate.
Legal glass or a feeder load of 51 to 70 sheets lifts a real restriction
Go with Brother MFC-L5915DW. The larger MFP adds exactly those physical capabilities.
You need color copies printed from the scanned originals
Neither model fits. Each scans in color and prints in monochrome.
Decision guide
Before you buy
Space for daily work next to the printer is the aim, but some originals cannot be fed, and the larger glass may be your only reason to accept a wider machine.
What this page can’t tell you
- No ranking for image quality or reliability was measured.
- Since the manual makes the same printing noise claims for both, neither is recommended as quieter here.
- File-completion times are not what scan-rate claims give, since advanced processing is excluded.
By the numbers
What the data shows
What we found across the laser printers we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Brother MFC-L5710DW |
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| Brother MFC-L5915DW |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Brother MFC-L5710DW
A 3.1-inch narrower body is yours if the shorter glass and 50-sheet ADF cover your paperwork.
Supported jobs get the same stated duplex scan rate as the 5915.
See price & reviews on AmazonBrother MFC-L5915DW
Legal-size originals can lie on the documented 14-inch glass, so unsuitable sheets are not forced through a feeder.
One load takes eligible 51- to 70-sheet packets.
See price & reviews on AmazonEach link opens in a new tab.
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