Replacement Keyboard for Dell Latitude 5420 5421 5430 5431 5440 5450 7420 7430 7520 7530, Precision 3470 3480 3490 Series Laptop with Backlit P/N: MV4X8 0MV4X8, US Layout
Quick take
This backlit replacement keyboard is designed for a set of Dell Latitude (5420/5421/5430/5431/5440/5450 and 7420/7430/7520/7530) and Dell Precision (3470/3480/3490) laptops, using the MV4X8 (0MV4X8) part number and a US QWERTY layout. It appears to be a solid fit-and-finish option for restoring full keyboard function, with buyers noting the key feel and backlight brightness may not match the original exactly.
Pros and cons
Pros
- Targets Dell models listed for compatibility, including multiple Latitude and Precision generations.
- Backlit keys with a US layout in a gray frame design.
- Buyers report it fits correctly and works immediately after installation when the keyboard is snapped into place.
- Keyboard was described as tested before shipping, aiming for “ready-to-use” replacement.
Cons
- Key feel can be slightly less crisp than expected, based on buyer impressions.
- Backlighting may be a bit dimmer or uneven if the keyboard base is not seated properly.
- Some model-specific keycap layout details can differ (not everyone can just swap the old keycaps).
What buyers think
Buyer-review evidence is limited, but the available feedback is consistent on a few practical points. Multiple buyers say the keyboard fits their Dell Latitude/Precision laptop and restores normal typing, especially when the keyboard is fully seated with the proper snap points. Several also mention backlight behavior, either as slightly dimmer than OEM or as potentially not lighting evenly until everything is positioned correctly. A small handful of buyers report minor differences in key feel, described as not as crisp as the original, while overall usability remains good.
Who this replacement keyboard is for
This is a good match if you have one of the compatible Dell laptop models and need a replacement US-layout backlit keyboard. It is especially relevant if your current keyboard has failed keys, worn legends, or you want to restore backlighting functionality.
Compatibility and part number checklist
Before buying, verify you are matching both the model and the keyboard part number. This keyboard is intended for specific Dell Latitude models (5420, 5421, 5430, 5431, 5440, 5450, 7420, 7430, 7520, 7530) and Dell Precision models (3470, 3480, 3490). It also specifies the compatible P/N as MV4X8 and 0MV4X8. If your laptop uses a different keyboard part number or a non-US layout, you may need a different replacement.
Backlit performance and day-to-day feel
Because this is a backlit keyboard, the main question is how close it is to the OEM experience. The feedback collected points to two themes: (1) backlights can be slightly dimmer than the original for some users, and (2) lighting can look uneven if the keyboard is not snapped down evenly on its base during installation. On typing feel, some buyers notice the keys are not as crisp as they expected, though functionality is still reported as solid.
Installation reality check
Replacing a laptop keyboard is usually manageable with patience, but it is not a “no-think” job. Buyers mention that installation can require careful handling, keeping screws organized, and using a reliable step-by-step guide. For at least one compatible model, extra access steps may be needed, and success depends on reinstalling parts in the correct order.
Pros and cons in plain terms
Pros
- Designed for backlit use in the listed Dell Latitude and Precision models with MV4X8 (0MV4X8).
- Buyers report it functions as expected after installation, with full typing restored.
- Backlight support is included, and it should work normally when the keyboard is properly seated.
- Reviewers describe it as a good value replacement for getting a working keyboard again.
Cons
- Expect small differences in key feel compared to the original keyboard.
- Backlight brightness may be slightly different, and uneven illumination can happen if fitment is off.
- If your laptop has unique keycap mappings (for example, model-specific modifier keys), you may not be able to reuse your old keycaps cleanly.
Is it worth it?
This replacement keyboard is worth considering if you need a backlit US-layout keyboard for one of the specified Dell Latitude or Precision models, and you are comfortable matching the MV4X8 (0MV4X8) part number. It looks like a practical “restore the basics” solution, with the main tradeoffs being minor differences in key feel and possible backlight brightness variance versus the OEM unit.
Price and availability
Pricing fluctuates by marketplace listing. Check the current price and shipping details here: Buy on Amazon.
FAQ
Does this keyboard support backlighting?
Yes. This replacement is described as a backlit US-layout keyboard.
What Dell laptops is it compatible with?
It lists compatibility with Dell Latitude models 5420, 5421, 5430, 5431, 5440, 5450, 7420, 7430, 7520, and 7530, and Dell Precision models 3470, 3480, and 3490.
What part number should I look for on my old keyboard?
The compatible part numbers provided are MV4X8 and 0MV4X8.
Will it match my original key feel and backlight brightness exactly?
Buyers report the keyboard functions well and fits correctly, but some mention slight differences in key feel and that the backlights can be slightly dimmer than the original.
How hard is the installation?
Installation is described as doable, but it depends on careful disassembly and reassembly. Using a detailed guide is recommended, and taking care with screw placement can help avoid issues.
Final verdict
If you have a compatible Dell Latitude or Precision laptop and you match the MV4X8 (0MV4X8) part number, this backlit US-layout replacement keyboard is an encouraging option for bringing a non-working or worn keyboard back to normal. Plan for a small chance of differences in key feel and backlight appearance, and focus on getting the keyboard seated evenly during installation for the best lighting results.
Specifications
| Product Title | Replacement Keyboard for Dell Latitude 5420 5421 5430 5431 5440 5450 7420 7430 7520 7530, Precision 3470 3480 3490 Series Laptop with Backlit P/N: MV4X8 0MV4X8, US Layout |
|---|---|
| Category | Electronics > Computers & Accessories > Computer Components > Laptop Replacement Parts |
| Brand | KBRPARTS |
| Manufacturer | KBRPARTS |
| Model Number | KB-JPS-DELL-Latitude 5420-BG |
| Color | Grey |
| Material | Acrylonitrile Butadiene Styrene |
| Compatible Devices | Dell Latitude 5420 5421 5430 5431 5440 5450, Latitude 7420 7430 7520 7530, Precision 3470 3480 3490 Series Laptop |
| Connectivity Technology | RF |
| Additional Features | Backlit |
| Keyboard Backlighting Color Support | Single Color |
| Power Source | USB Powered |
| Switch Type | Membrane |
| Keyboard Layout | QWERTY |
| Hand Orientation | Ambidextrous |
| Button Quantity | 104 |
| Water Resistance Level | Not Water Resistant |
| Minimum Required Operating System Version | Windows 10 |
| Number of Keys | 84 |
| Number of Sections | 3 |
| Style Name | Contemporary |
| Theme | Neutral |
| Keyboard Description | Flexible |
| Antenna Location | Office |
| Built-In Media | USB Cable |
| Series Number | 48 |
| Unit Count | 1.0 Count |
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