# Lexmark 40X6788 Developer Unit for Laser Printing Black 120000 Pages Yield

**URL:** https://aio.lv/en/product--lexmark-40x6788--1006947
**Data updated:** 2026-08-05 04:45 (EEST)
**Category:** Other goods
**Manufacturer:** Lexmark
**Manufacturer code:** 40X6788
**EAN:** 5704327919940
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-10-27 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lexmark-40x6788--1006947

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 12.10.2026 | free |
| Pickup points | 15.10.2026 | 1.99 EUR |
| Courier delivery to door | 15.10.2026 | 4.99 EUR |

## Summary description

Lexmark 40X6788 black developer unit utilizing laser print technology, designed for reliable office printing with a high page yield of up to 120000 pages. This original component ensures optimal print quality and consistent performance for compatible Lexmark printer models.

## Long description

The Lexmark 40X6788 black developer unit is an original component designed specifically for laser printing applications. Utilizing advanced laser print technology, this replacement part ensures optimal print quality and consistent performance throughout its lifespan. Engineered to integrate seamlessly with compatible Lexmark printer models such as the C935, X940, X940E, X945, and X945E, it delivers reliable operation for demanding office environments. With a high page yield of up to 120,000 pages, this developer unit supports high-volume document production while maintaining sharp and professional text output.
Advantages
Using original components like the Lexmark developer unit ensures consistent toner transfer and precise image formation on every page. The high page yield reduces the frequency of component replacements, contributing to uninterrupted workflow and improved operational efficiency in busy workgroups. Because it is manufactured to strict technical standards by Lexmark, this developer assembly helps protect the printer hardware from premature wear and minimizes potential print defects. Furthermore, the installation process is straightforward, allowing maintenance personnel to replace the unit quickly and resume printing operations with minimal downtime.
Suitable for
High-volume office printing environments with regular document production
Business environments utilizing Lexmark C935, X940, X940E, X945, and X945E printers
Corporate documentation, reports, and monochrome print tasks requiring consistent clarity
Workgroups that prioritize original manufacturer components for hardware longevity
When it may not be suitable
This developer unit is not compatible with printer models outside of the specified Lexmark series, such as devices from other manufacturers or non-matching Lexmark families. It may also exceed the practical requirements of low-volume home users or small offices where printing is infrequent and high page yields are unnecessary.
Key specifications
Print technology: Laser
Color: Black
Page yield: Up to 120000 pages
Compatibility: Lexmark C935, X940, X940E, X945, X945E
Component type: Original developer unit assembly
How to use
Before installing the developer unit, ensure the printer is powered off and unplugged to maintain safety. Open the designated access cover on the compatible Lexmark printer according to the manufacturer guidelines. Carefully remove the spent developer unit by pulling it out along its tracks. Unpack the new Lexmark developer unit, remove any protective packaging materials or shipping locks, and align it properly with the internal guides. Push the unit firmly into place until it clicks securely. Close the printer access cover, reconnect the power cable, and turn the device back on. Allow the printer to initialize and recognize the new component before sending print jobs.
What to consider before purchase
Verify the exact model number of your existing printer to ensure compatibility with C935, X940, X940E, X945, or X945E series
Assess your average printing volume to determine if a high-yield component aligns with your operational needs
Confirm whether you require an original manufacturer part for maintenance and warranty compliance
Usage recommendations
Store the developer unit in its original unopened packaging in a cool, dry place away from direct sunlight and extreme temperature fluctuations until ready for installation. Avoid touching the sensitive internal roller surfaces during handling to prevent print quality issues.

## Specifications

| Feature | Value |
|---|---|
| Print technology | Laser |
| Compatibility | C935, X940, X945 |
| Product colour | Black |
| Page yield | 120000 pages |
| Harmonized System (HS) code | 84439990 |

## FAQ

### How much does the Lexmark 40X6788 Developer Unit cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 12.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Lexmark products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Lexmark service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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