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Description
Lexmark 500-Sheet Duplex Unit, Complete Assembly T642, T644, X644E, X646EEnhance your Lexmark printers efficiency with the genuine 500 Sheet Duplex Unit, a complete assembly designed for the T642, T644, X644E, and X646E models. This Lexmark duplex unit delivers reliable two sided printing, streamlined paper handling, and durable performance built to meet rigorous standards. Engineered as an OEM replacement component, it provides a seamless upgrade to your workspace printing workflow, helping you reduce reloading frequency
Enhance your Lexmark printer’s efficiency with the genuine 500-Sheet Duplex Unit, a complete assembly designed for the T642, T644, X644E, and X646E models. This Lexmark duplex unit delivers reliable two-sided printing, streamlined paper handling, and durable performance built to meet rigorous standards. Engineered as an OEM replacement component, it provides a seamless upgrade to your workspace printing workflow, helping you reduce reloading frequency and achieve professional, high-quality output with every job.
- Boost productivity with built-in duplexing and a generous 500-sheet capacity, reducing reloading interruptions for busy offices and home workspaces. This high-capacity duplex unit makes two-sided printing fast and effortless, helping you save time and cut paper usage without compromising print quality.
- Designed for precise compatibility with Lexmark T642, T644, X644E, and X646E printers, ensuring a snug fit, reliable feeding, and smooth operation. OEM specification alignment minimizes misfeeds and jams while preserving the printer’s original performance characteristics.
- Engineered for durability, this complete assembly is built from genuine Lexmark components and tested to rigorous standards. The result is long-lasting dependability that stays consistent across long print runs, providing dependable results for everyday tasks and dense workloads alike.
- Easy installation and maintenance come standard with this complete assembly. The unit is engineered for straightforward replacement, allowing technicians and experienced users to install with minimal downtime and minimal disruption to your workflow.
- Value-driven readiness: a genuine Lexmark part that preserves device warranty potential and printer calibration integrity. By choosing OEM components, you safeguard against compatibility issues and ensure consistent color, alignment, and print quality across all duplex printing tasks.
Technical Details of Lexmark 500-Sheet Duplex Unit
- Compatibility: Lexmark T642, T644, X644E, X646E printers
- Sheet capacity: 500 sheets
- Duplex unit: Built-in two-sided printing capability
- Assembly type: Complete assembly for straightforward replacement
- Part quality: Genuine Lexmark replacement parts, engineered for durability and tested to rigorous standards
How to Install Lexmark 500-Sheet Duplex Unit
- Power off the Lexmark printer and unplug the power cord before beginning any service work to ensure safety.
- Open the printer access panel to locate the existing duplex unit or the mounting area for the duplex assembly.
- If replacing an old duplex unit, carefully disengage and remove it following the printer’s service manual, taking note of connector orientations and screw placements.
- Align the new Lexmark 500-Sheet Duplex Unit with the mounting brackets and connectors. Ensure the connectors are fully mated and that the unit sits securely in its drive path.
- Secure the unit using the appropriate screws or latches as specified by the printer model, then reassemble any covers or panels that were removed during the replacement.
- Reconnect the printer to power and turn it on. Run a test page or alignment page to verify proper feeding, duplexing, and printing quality. If any jams or misfeeds occur, power down and reseat the unit, ensuring all connections are firmly seated.
- Follow any on-screen prompts or printer utility recommendations to complete the installation, including paper path calibration if required by your model.
- Perform a few print jobs to confirm consistent two-sided printing, edge-to-edge alignment, and reliable paper feeding, adjusting settings if necessary to optimize speed and quality.
Frequently asked questions
- Q: What models does this duplex unit fit? A: It is designed for Lexmark T642, T644, X644E, and X646E printers, providing a precise fit and reliable two-sided printing.
- Q: Does this assembly include installation hardware? A: Yes, this is a complete assembly designed for straightforward replacement in compatible Lexmark printers.
- Q: Is this a genuine Lexmark part? A: Yes, this is a genuine Lexmark replacement part, engineered for durability and tested to rigorous standards to ensure optimal performance.
- Q: Will replacing my duplex unit improve printing speed? A: The duplex unit itself doesn’t increase the printer’s raw print speed, but it enables efficient two-sided printing, which can reduce paper usage, save space, and streamline output for duplex jobs.
- Q: Are there warranty considerations? A: Warranty terms depend on the seller; Lexmark genuine parts are designed to support long-term reliability, but check with the retailer for specific coverage details.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Simple and efficient
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
This is a dandy little item. Easy to use straight out of the box, No fancy bells and whistles.but why should a mouse try to replicate commands that are on the laptop?
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Reviewed in the United States on May 16, 2026
★★★★★ 4
Simple, Reliable, and Works Great
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
The Logitech M185 has been exactly what I needed for everyday computer use. Setup took less than a minute—just plug in the tiny USB receiver and it was ready to go. The mouse responds smoothly, tracks accurately, and feels comfortable in my hand even after several hours of use.
What I appreciate most is the reliability. The wireless connection has been stable with no noticeable lag or dropouts, and the battery life has been excellent. For browsing, office work, and general daily tasks, this mouse delivers solid performance at a very reasonable price. I'm extremely happy with it.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Great.
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
Great deal. Works great.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Great mouse
Size: 1 Pack, Style: USB Receiver, Color: Swift Grey
It synced right up and is working great
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Basic mouse that works - - for now.
Size: 1 Pack, Style: USB Receiver, Color: Blue
I ordered this mouse (in blue) to replace the recently deceased exact same model that I've used for the past 2 or 3 years. I like the simplicity of the M185 mouse and mostly the best bang for your buck! I caught this one on sale for less than a ten-spot, so I thought, "why not."
I'm hoping that this one will last a bit longer than my two previous M185 models, that averaged about 3 years each. This model seems plagued by a short life span and is predisposed to mysteriously and suddenly dying, without any obvious symptoms or warning of any kind - - you're working and clicking along, going about your day, when suddenly the cursor on the computer screen freezes and that's it. Nothing, zero, nada. Funny thing, I'm very careful not to abuse or drop the mouse, and keep a fresh battery installed and watch for leakage and all that stuff - - they just stop working, and I assume it is caused by some sort of inherent electronic fault in the circuitry of the previous M185's. Due to my loyalty to the brand and model (and since it was on sale) I decided to give it one more shot. They say that "third time's a charm".
I like the fact that the M185 is simple and uncluttered with extra buttons that I would never use for my purpose, which is simple web-browsing and the occasional text document production. The feel is solid, not heavy, but not cheap feeling, either. I'm used to the shape of this mouse, which to me is quite comfortable for long sessions, another reason why I kind of wanted to stay with this model. The buttons have an audible "click", which doesn't bother me at all, and the wheel moves smoothly and also has a clicking operation (which I rarely ever use). The overall surface of the mouse has a matte finish, but like my previous models I'm sure it will eventually wear shiny spots where my fingers reside and will attain a more "well-used" look in time. Connecting it was a breeze, too. I just plugged the dongle into a spare rear usb port of my desktop, and the mouse connected instantly, no problem. The dongle can be stored safely inside the battery compartment, so you can take the whole thing out of the house if needed for use elsewhere. The speed of 1000 dpi seems just right for my purposes. The one I ordered even came with its own AA Duracell battery, which I wasn't really expecting. This mouse also enters "sleep mode" when you don't use it for a while, and I can't say how many times I've got up and left it on all night. And that's not hard to do, as I'll explain next.
The only real negative to this mouse is the absence of any easily visible status indicator of it's on / off switch. The rear housing of this mouse is matte black, including the tiny switch where you turn it on and off with your fingernail, with only a very faint "on" lettering (also black), and very hard to see with my aging eyes. The laser is not lighted or visible when on, also adding to the confusion, especially in a darkened room. So, as a workaround, I took a tiny drop of green paint and placed it down inside the switch slider to visibly help indicate the "on" position, and likewise a dot of bright orange for the "off" position. Many of Logitech's more expensive models (and a few other manufacturers) include this color-coded switch indication. I guess for the $$, they had to cut corners somewhere - - a minor complaint.
In summary, this is a good basic mouse that works - - let's hope that this one will last longer than its two predecessors.
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Reviewed in the United States on February 17, 2023