Microsoft B2M-00012 Natural Ergo Keyboard 4000

Name: Microsoft B2M-00012 Natural Ergo Keyboard 4000
Brand: Unbranded
SKU: B004XMAL00

Status: Microsoft B2M-00012 Natural Ergo Keyboard 4000: Unavailable on Amazon as of 2026-10-07 04:26 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Microsoft B2M-00012 Natural Ergo Keyboard 4000: Split ergonomic key layout eases wrist strain; main trade-off: wired USB only, no wireless option.

Unavailable on Amazon as of 2026-10-07 04:26 UTC

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Currently unavailable on Amazon. Not the same product — an in-stock alternative:

Similar: Microsoft Natural Ergonomic Keyboard 4000 for… — $399.95 on Amazon as of 2026-10-06 22:27 UTC (price may vary).

View Current Price — $399.95

Original listing (currently unavailable) → Compare to similar gaming peripherals

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

Mike Perry — Hardware researcher since 2014. For keyboards, mice, headsets and other PC peripherals, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Split ergonomic key layout eases wrist strain
✓ Cushioned palm rest supports natural hand position
✓ Cross-platform: Windows and macOS compatible
✓ Lightweight install (100 MB Windows, 30 MB Mac)

Cons

✗ Wired USB only, no wireless option
✗ Bulky footprint eats desk space
✗ Split layout has a real learning curve
✗ Priced at a premium for a membrane board

Manufacturer description

Microsoft B2M-00012 Natural Ergo Keyboard 4000. Hard Drive Space 60 MB free (Install 100 MB) (Windows-based computer) and 30 MB free (Install 30 MB) (Macintosh-based computer).

SpecPicks Verdict

SpecPicks scored Microsoft B2M-00012 Natural Ergo Keyboard 4000 using a rating × review-volume × price-fit model applied to published specs and reviews across the gaming peripherals category. Compare with similarly-priced alternatives in the gaming peripherals category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for gaming peripherals of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Full Specifications

Brand	Microsoft
Color	Black
Style	Contemporary
Material	Plastic, Silicone
Style Name	Contemporary
Unit Count	1 Count
Switch Type	Mechanical
Model Number	B2M-00012
Power Source	Corded Electric
Series Number	12
Built-In Media	Keyboard
Number of Keys	104
Button Quantity	104
Keyboard Layout	QWERTY
Mfr Part Number	B2M-00012
Special Feature	Ergonomic with Cushioned Palm Rest
Antenna Location	Business
Hand Orientation	Ambidextrous
Compatible Devices	PC
Enclosure Material	Plastic, Silicone

Ready to buy?

Amazon shows no buyable offer for Microsoft B2M-00012 Natural Ergo Keyboard 4000 at the last check. A similar in-stock product is Microsoft Natural Ergonomic Keyboard 4000 for…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $399.95