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alaTest has collected and analyzed 10 reviews of OKI MB491. The average rating for this product is 3.4/5, compared to an average rating of 4.0/5 for other Printers for all reviews. People really like the size. The paper handling is also mentioned favorably, but reviews are divided on the performance. The control panel and connectivity get less positive comments.

paper handling, size

price, noise, usability, connectivity, control panel

We analyzed user and expert ratings, product age and more factors. Compared to other Printers the OKI MB491 is awarded an overall alaScore™ of 83/100 = Very good quality.

Review analysis

(Based on 10 reviews)

Expert Reviews  

User Reviews  

Showing 6 review(s)

Expert Reviews User Reviews


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Showing 1 - 6 of 6 Show Reviews: in English | in other languages (4)

Expert review by : M. David Stone (



The OKI MB491+LP multifunction printer offers a legal-size flatbed and a duplexing automatic document feeder for scanning and copying.

Prints, copies, scans, faxes. 50-page duplexing (two-sided) automatic document feeder. Duplex printing. Legal-size flatbed.

Although fast enough so speed isn't an issue, it's a little slow for the price and rated engine speed.

Nov, 2012

Expert review by : M. David Stone (



The OKI MB491 monochrome laser MFP is designed for micro and small offices with relatively heavy-duty print needs.

Prints, scans, copies, faxes. 50-page automatic document feeder. Duplex (two-sided) printing.

Although not slow enough for speed to be an issue, it's a little slow for the price and rated engine speed.

More Multi-function Printer Reviews:• Brother MFC-L8610CDW• Brother MFC-L8900CDW• HP OfficeJet Pro 6978 All-in-One Printer• OKI MC573dn• Canon Pixma TS9020 Wireless Inkjet All-in-One Printer• more

Jul, 2012

Consumer review (

Uffda Mama, this one is difficult!


It's still working; sort of. Compared to the Brother MFC-8710dw that I love, it hasn't broken yet.

So, I've had this printer for a few months now and complain about it every day for one reason or another. I absolutely loved my Brother MFC-8710dw, but had two break in one year. (I still have one in our front office, and hoping it lasts awhile.) I am...

Dec, 2015

Consumer review (



Should have been clearly marked as having no wireless networking capabilities. It is misleading not to make it clear on such a high-tech printer.

Great device. It is one of the best printers I have ever owned as of this moment. I am in law school, and I print high quantities of various document/cases on a regular basis and this print speed/scanning is top notch and beats anything I have ever owned.

Does not have a wireless card and cannot achieve network connectivity without a wireless-card or external wireless print server. I would assume that a piece of equipment this advanced with its vast multitasking capabilities would have wireless...

Jan, 2014

Consumer review (

Updated description


Reasonably economical on toner usage. Good workhorse for small to medium sized business environments.

Runs all day every day. Good quality print.

Newegg updated the description to now say "Monochrome" printer. They originally called it a "Color" printer. It does fax and scan in color, if that helps. If the power goes out, beware that when the printer comes back on, the TCP/IP address might have...

Sep, 2013

Consumer review (

Good -BUT!!


MY bad. I didn't read the description page closely enough, and what I thought was supposed to be a workgroup COLOR LASER PRINTER, turns out to be only a MONO LASER PRINTER. It works just as advertised, but maybe NEWEGG should not label it as a "42 ppm...

Fast, good quality print, does it all

Be careful - this printer only PRINTS IN MONO (Black & White). It Scans and Faxes in color. Took off one EGG because of it not doing what I expected. Not really the products fault, but as you will notice it is advertised as a "Color Laser Printer"...

Nov, 2012

Product Specifications


Energy Star certified: Yes


Copier resize:25 - 400
Copy speed (normal quality, black, A4):40
Maximum copy resolution:600 x 600
Maximum number of copies:99
Time to first copy (black, normal):10 / 41


Color of product:Grey / Grey, White


Built-in display:Y
Display:LCD / LED
Display Diagonal:3.5
Display Resolution:320 x 128

Energy Management

AC input frequency:50/60
AC input voltage:220 - 240
Power consumption (off):0.5
Power consumption (PowerSave):14
Power consumption (standby):3 / 80
Power consumption (typical):610


Fax broadcasting:100
Fax memory:200 / 4
Fax Speed:2
Fax speed dialing (max numbers):100
Fax speed dialing, max numbers:100
Fax transmission speed:2
Group dial:20
Modem Speed:33.6
Standard Memory:4

Input Capacity

Auto document feeder (ADF) input capacity:50
Maximum input capacity:880
Multi-Purpose Tray capacity:100
Standard input capacity:250


Ethernet LAN:Y
Ethernet LAN connection: Yes
Ethernet LAN data rates:10,100
Mobile printing technologies:Apple AirPrint
Security algorithms:EAP, SSL/TLS
Wi-Fi: No

Operational Conditions

Operating relative humidity (H-H):20 - 80
Operating relative humidity range:20 - 80
Operating temperature (T-T):10 - 32
Operating temperature range (T-T):10 - 32
Storage relative humidity (H-H):10 - 90
Storage relative humidity range:10 - 90
Storage temperature (T-T):-10 - 43
Storage temperature range (T-T):-10 - 43

Other Features

All-in-One Functions:Copy, Fax, Print, Scan
Color all-in-one functions: No
Color faxing: No
Color scanning: No
Connectivity Technology:Wired
Dimensions (WxDxH):16.8 x 16.7 x 17.9
Network ready: Yes
Networking features:Fast Ethernet
Other network protocols supported:SMTP, POP3, HTTP, DHCP, DNS, LPR, Port9100, BOOTP, ARP, FTP, CIFS, LDAP, SLP, Bonjour, NetWare, EtherTalk, NetBEUI, LLTD
Power supply type:AC
Wireless technologies:Wired
Wireless Technology:N

Output Capacity

Standard output capacity:100 / 150

Paper Handling

Auto Document Feeder (ADF) media weight:60 - 105
Duplex media weight:60 - 120
Envelopes sizes:9, 10, C5, C6, DL / 9, 10, C5, C6, DL, Monarch / C5, C6, DL
ISO A-series sizes (A0...A9):A4, A5 / A4, A5, A6
ISO B-series sizes (B0...B9):B5
JIS B-series sizes (B0...B9):B5
Maximum ISO A-series paper size:A4
Maximum print area:A4 (210 x 297 mm)
Maximum print size:A4 (210 x 297 mm)
Multi-purpose Tray media types:Plain Paper
Multi-Purpose Tray media weight:60 - 160
Standard tray media types:Envelopes / Plain Paper
Standard tray media weight:60 - 120


Copying:Mono copying
Digital sender:N
Duplex functions:No / Print
Faxing:Mono faxing
Maximum duty cycle:80000
Number of print cartridges:1
Print technology:Laser / LED
Printing:Mono printing
Printing colors:Black
Processor frequency:330
Recommended duty cycle:0 - 8000
Scanning:Colour scanning / Mono scanning

Ports & interfaces

Standard interfaces:Ethernet, RJ-11, USB 2.0 / Ethernet, USB 2.0 / RJ-11, USB 2.0
USB 2.0 ports quantity:2


AC input frequency:50/60
AC input voltage:220 - 240
Power consumption (average operating):610 / 950
Power consumption (off):0.5
Power consumption (PowerSave):14
Power consumption (standby):3 / 80


Maximum Resolution:1200 x 1200
Print speed (black, normal quality, A4/US Letter):40
Standard printer languages:PCL 5e, PCL 6, PostScript 3 / PCL 5e, PCL 6, PostScript 3, SIDM
Time to first page (black, normal):5
Warm-up time:60


Document formats supported:PDF / PDF, XPS
Gray scale levels:7
Image formats supported:BMP, EMF, GIF, JPG, PCX, PNG, TGA, WMF / EMF, GIF, JPG, PNG, TGA, WMF
Input color depth:48
Input colour depth:48
Optical scanning resolution:600 x 600
Output color depth:24
Output colour depth:24
Scan speed (black):37.5
Scan speed (color):10
Scan to:CIFS, E-mail, FTP, USB
Scan type:Flatbed / Flatbed & ADF
Scanner Type:Flatbed / Flatbed & ADF


Mac operating systems supported: Yes
Server operating systems supported:Windows Server 2003, Windows Server 2008, Windows Server 2008 R2
Windows operating systems supported: Yes

Sound Emission

Copying noise level:55
Noise level (idle):30
Print noise level:55
Printing noise level:55
Scanning noise level:55


Card reader integrated: Yes
Compatible memory cards:SD
Internal memory:256
Internal storage capacity:4

Weight & Dimensions

Weight:44.1 / 714.7
Width:16.8 / 19.1