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Can compatible Windows MB451w use included Wi-Fi for Legal print duplex and Legal reversing color capture with 350-sheet input?
Yes. The exact w model includes Wi-Fi, the actual paper and document tables support Legal, and the Windows WSD procedure provides dual-side capture. The feeder reverses the original; the glass is not Legal size.
Explore this need in the finder →Does RADF mean the document is scanned on both sides in a single pass?
No. The exact brochure identifies a reversing duplex feeder. Single-pass capture is a different mechanism.
Explore this need in the finder →Can its access-control or WPS PIN satisfy a confidential print-release requirement?
No. Actual Secure Print chapters exclude MB451w. Access codes and wireless setup PINs do not hold a print job for release.
Explore this need in the finder →The w model has real included wireless
The OKI MB451w combines monochrome LED printing and copying with color scanning and analog fax. Its exact Americas ordering table identifies Wireless part 62439001 as the 120 V model. Wi-Fi, Ethernet and computer USB are included.
The actual shared manual's wireless setup specifically names MB451w and MB471w. It should not be applied to every neighboring MB model. For this exact w edition, however, the wireless connection is an included capability rather than an assumed optional adapter.
Legal two-sided capture uses a reversing feeder
The 50-sheet feeder automatically scans both sides by reversing the original. The exact Americas brochure calls it RADF, and the actual operating document table accepts Letter, Legal and A4 in duplex. This is not a single-pass scanner.
The glass is different: it supports Letter and A4 among those sizes. Legal glass support in the shared manual is marked only for specific LP variants, which do not include MB451w. A Legal feeder requirement can be satisfied without implying that a bound Legal original fits the platen.
Windows WSD supplies an actual network capture route
The basic manual explains installing the network WSD scanner on a compatible Windows computer. The advanced manual then provides a specific dual-side procedure using long-edge or short-edge binding. This supports a documented network computer workflow with the reversing feeder.
Check device discovery, the enabled WSD service and the intended computer setup. A changed device address can require reinstalling that scanner connection. The separate Scan to Network PC routine instead needs a prepared destination account, shared folder and profile. Confirm destination permissions before scanning.
USB ActKey and TWAIN provide another documented desktop route, but this assessment does not borrow WSD's dual-side procedure into every USB application. Mac panel-start scanning also has fixed-A4 glass restrictions that do not describe the Windows feeder workflow.
The paper tray cannot be expanded like its siblings
The included cassette holds 250 suitable sheets and the multipurpose source adds 100 at 80 gsm. Both explicitly accept Letter, Legal and A4. The shared manual restricts optional tray two to other listed models, so MB451w remains a 350-sheet arrangement.
Actual desktop procedures support automatic two-sided printing on those ordinary sizes. Follow the narrower Americas duplex weight condition of 60–120 gsm where a later shared guide permits a slightly higher figure. Envelopes use their own multipurpose and rear-output path and cannot duplex.
Its PIN codes do not provide Secure Print
The brochure discusses access-control codes and WPS offers a PIN setup method. Neither establishes a print job held until its owner arrives. The actual Secure Print chapters are explicitly restricted to certain MB491, ES and MPS models, excluding MB451w.
This model therefore does not meet a confidential PIN-release printing requirement. The distinction matters when configuring a shared office device: restricting access to a function is different from preventing an otherwise accepted document from printing unattended.
Use the modest recommended volume and actual supplies
The maker recommends 200–2,000 pages per month, separately from the 50,000-page maximum duty. The 30 ppm Letter simplex declaration is also different from the duplex figure and the shared guide's A4 rate. These are declared operating references, not independent test results.
The exact Americas starter is declared at 1,000 pages and the replacement cartridge at 1,500 under stated ISO conditions. Do not substitute larger siblings' toner yields. Finally, plan around the loaded 20 kg machine, allow opening and service space, and account for its documented wake and automatic-off behavior.
Key details at a glance
| Color printing | No |
|---|---|
| Scanner | Yes |
| Copying | Yes |
| Fax | Yes |
| Flatbed scanner | Yes |
| Automatic document feeder | Yes |
| Automatic two-sided printing | Yes |
| Automatic two-sided scanning | Yes |
| Single-pass two-sided scanning | No |
| Color scanning | Yes |
| Instructed envelope handling | Yes |
| Supported PIN-release printing | No |
| Recommended monthly minimum | 200 pages |
| Recommended monthly maximum | 2000 pages |
| Maximum monthly duty | 50000 pages |
| Included ordinary-paper capacity | 350 sheets |
| Document-feeder capacity | 50 sheets |
| Declared one-sided mono Letter rate | 30 pages/min |
| Unit-body width | 16.81 in |
| Unit-body depth | 16.73 in |
| Unit-body height | 17.91 in |
| Unit weight | 44.09 lb |
| Imaging engine | led |
Use the exact model’s instructions for operating limits, supplied equipment and version differences.
Paper, software and setup details
Print-rate conditions
The exact Americas MB451w brochure gives 30 ppm Letter simplex and a separate 17 ppm duplex declaration. The shared manual gives 29 ppm A4 simplex. Recommended monthly volume is 200–2000, separate from maximum duty 50000; none is an independent test result.
Paper handling
MB451w includes a 250-sheet cassette and 100-sheet multipurpose source at 80 gsm; both explicitly list Letter, Legal and A4. Actual source and desktop duplex tables support those sizes. Use the narrower Americas 60–120 gsm duplex condition where later shared manual permits 122 gsm. Optional tray 2 is explicitly unavailable to MB451w, so maximum included configuration remains 350. Suitable envelopes use multipurpose and rear face-up exit, one-sided.
Scanning arrangement
The exact model has color CIS capture, Letter/A4 glass and 50-sheet reversing duplex ADF accepting Letter/Legal/A4 at 60–105 gsm in simplex or duplex. It is not single-pass. Actual Windows network WSD setup and dual-side binding procedure establish automatic computer capture over the documented network route. USB ActKey/TWAIN plan retains independently confirmed glass and simplex feeder capture only.
Computer and mobile connections
The w model includes infrastructure Wi-Fi, Ethernet and computer USB. Actual wireless setup specifically names MB451w/MB471w, rather than all shared models. Network WSD capture requires a compatible Windows computer and enabled discovery/service; prepared network folder profiles are a separate CIFS/FTP/HTTP route. WPS PIN is connection setup, not confidential print release.
Supplies and declared yields
The exact 120 V Americas brochure declares a 1000-page starter and 1500-page replacement cartridge under ISO/IEC 19752, plus a 25000-page drum at three pages/job. Supply declarations are not measured operating costs; larger-family replacement yields are excluded.
Software and support
The linked Basic and Advanced manuals explicitly include MB451w on their actual covers despite MB491 filenames. Secure Print and encrypted Secure Print chapters are restricted to the listed MB491/ES/MPS variants, excluding MB451w. Mac panel-start capture has fixed-A4 glass restrictions; it is not substituted for the Windows Legal-feeder plan. A conditional generic AirPrint guide alone does not establish exact compatibility.
Electrical edition and setup
The exact Americas order table identifies MB451w Wireless 62439001 as 120 V. Body dimensions are 427 × 425 × 455 mm and loaded mass is 20 kg including all consumables. Its brochure notes a physical Power Save wake operation and configurable auto-off. Leave feeder, glass, tray, rear output and service clearance.
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