Our take
The Kyocera ECOSYS M3645idn is a fast monochrome multifunction printer for an office that needs copy, color scan and fax as well as printing. Kyocera's U.S. brochure maps item 1102V32US0 to the model, rates it at up to 47 pages per minute on Letter and lists standard duplex. Its 600-sheet standard input can be expanded to 2,600 sheets, and standard interfaces include Gigabit Ethernet and USB. Wireless is optional, and the reviewed brochure does not provide a recommended monthly page range.
A wired workgroup that needs fast monochrome print, copy, scan and fax, plus automatic duplex and expandable paper input..
Look elsewhere if color printing, standard built-in wireless or a published monthly recommendation is essential to the decision.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- Kyocera documents print, copy, fax and color scanning in the exact M3645idn configuration.
- Standard automatic duplex and a 47 ppm Letter rating support recurring two-sided office queues.
- Gigabit Ethernet and expandable paper input suit a wired workgroup installation.
What to weigh up
- The printer is monochrome for print output; color capability applies to scanning, not printing.
- Wireless connectivity is optional, so built-in Wi-Fi should not be assumed in the standard configuration.
- The reviewed brochure does not state a recommended monthly volume range.
Specifications and exact model details
The key details
| Model covered | ECOSYS M3645idn (1102V32US0) |
|---|---|
| Main functions | Monochrome print/copy/fax MFP with color scanning |
| Print output | Up to 47 ppm Letter; 600-sheet standard input, expandable to 2,600 |
| Two-sided printing | Standard duplex, Gigabit Ethernet and USB; wireless optional |
Performance figures are manufacturer claims. Source checked October 16, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Print, copy, scan and fax in one mono system
Kyocera identifies the M3645idn as a monochrome multifunction model with printing, copying, color scanning and fax. The scanner's color capability should not be confused with color print output; this model is intended for black-and-white documents. Combining these workflows can simplify a wired office station that handles forms, incoming faxes and document capture. The included feature set is important to distinguish from the smaller M3145idn in the same brochure, which is a related but different model. Verify item 1102V32US0 when comparing individual listings. ([Kyocera ECOSYS M3645idn brochure](https://www.kyoceradocumentsolutions.us/content/download-center-americas/us/documents/brochures-and-specs/ECOSYS_M3645idn_M3145idn_Vantage_Point_pdf.download.pdf)).
A 47 ppm rating and standard duplex
Kyocera rates the M3645idn at up to 47 pages per minute on Letter and lists automatic duplex as standard. That makes it a plausible match for regular two-sided forms and reports without someone manually flipping paper. As with other manufacturer speeds, the figure is a rated maximum rather than a guarantee for every file or scan-and-print process. The combination of throughput and duplex is more relevant to a shared mono queue than to an occasional single-page desk, but the brochure does not state a monthly recommendation that can turn those features into a hard volume threshold. ([Kyocera ECOSYS M3645idn brochure](https://www.kyoceradocumentsolutions.us/content/download-center-americas/us/documents/brochures-and-specs/ECOSYS_M3645idn_M3145idn_Vantage_Point_pdf.download.pdf)).
Paper capacity can expand beyond the standard setup
The brochure lists 600 sheets of standard paper input and expansion up to 2,600 sheets. The baseline capacity can keep common office work moving with fewer refills than a small desktop tray, while the expanded figure requires additional hardware and should not be mistaken for the included setup. Buyers comparing used units should check which paper feeders are actually present. A larger capacity is useful when a queue justifies the space and refill reduction; it does not indicate the number of pages the maker recommends printing each month. ([Kyocera ECOSYS M3645idn brochure](https://www.kyoceradocumentsolutions.us/content/download-center-americas/us/documents/brochures-and-specs/ECOSYS_M3645idn_M3145idn_Vantage_Point_pdf.download.pdf)).
Gigabit Ethernet is standard; wireless is optional
Kyocera lists standard 10/100/1000 Ethernet and USB, supporting a high-speed wired office network or a direct connection. Wireless is listed as an option rather than part of the standard configuration. If the printer must join Wi-Fi without an Ethernet cable, confirm whether the exact unit includes the needed wireless option before purchase. The profile treats Ethernet as available and built-in wireless as unavailable in the base configuration. This keeps a possible accessory separate from what the standard M3645idn includes. ([Kyocera ECOSYS M3645idn brochure](https://www.kyoceradocumentsolutions.us/content/download-center-americas/us/documents/brochures-and-specs/ECOSYS_M3645idn_M3145idn_Vantage_Point_pdf.download.pdf)).
Leave monthly workload open when Kyocera does not specify it
The reviewed U.S. brochure gives speed, paper capacity and connectivity, but it does not state a recommended monthly page range for the M3645idn. A duty-cycle maximum or an engine speed would not be equivalent to a recommended operating range. The finder therefore leaves the monthly recommendation unknown and does not assign a guessed cutoff. Teams can still consider the 47 ppm rating and 600-sheet standard input when deciding whether the machine is physically and operationally appropriate, but should compare a different model if a manufacturer-published monthly recommendation is mandatory. ([Kyocera ECOSYS M3645idn brochure](https://www.kyoceradocumentsolutions.us/content/download-center-americas/us/documents/brochures-and-specs/ECOSYS_M3645idn_M3145idn_Vantage_Point_pdf.download.pdf)).
Compare for your needs
For a smaller color MFP with built-in wireless and standard fax, compare the published Ricoh SP C252SF. The Kyocera is the stronger choice for a faster mono office queue and expandable paper input when color printing is unnecessary.
Find the undefined that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Does the M3645idn print in color?
No. It is a monochrome print MFP; its brochure specifies color scanning, not color printing.
Does it include automatic duplex?
Yes. Kyocera lists standard duplex printing for the M3645idn.
Is Wi-Fi standard?
No. Kyocera describes wireless connectivity as optional; standard Ethernet and USB are documented.
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 and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Kyocera U.S. M3645idn/M3145idn brochure and exact item 1102V32US0 ↗ — checked October 16, 2026.
- Kyocera U.S. M3645idn brochure: item mapping, functions, speed, duplex, paper, interfaces and optional wireless ↗ — checked October 16, 2026.
The decision
Choose the M3645idn for its combination of mono speed, standard fax and duplex, color scanning and expandable paper. Confirm whether an optional wireless kit is needed and plan workload without assuming an unpublished recommendation.
Is it the right fit?
Check the exact model and today’s offers on Amazon.