Microsoft Natural Ergonomic Keyboard 4000 bundled with Microsoft Comfort Mouse 4500 — both fully tested and working great.

This is a complete wired ergonomic workstation setup, ideal for long typing sessions, office environments, and users specifically searching for the discontinued 4000 model.

The Natural Ergonomic 4000 remains one of Microsoft’s most popular split-design keyboards for comfort and productivity.

✔ Split ergonomic key layout

✔ Cushioned palm rest

✔ Built-in zoom slider

✔ Dedicated media & shortcut keys

✔ All keys tested – fully responsive

Paired with the Microsoft Comfort Mouse 4500 for a comfortable, reliable desktop experience.

✔ High-definition optical tracking

✔ Scroll wheel working

✔ Left & right clicks responsive

✔ Smooth cursor movement

Both connect via USB — simple plug & play, no software required.

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Models:

Keyboard: Natural Ergonomic 4000 (KU-0462)

Mouse: Comfort Mouse 4500 (Model 1422)

Connection: Wired USB

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Condition (Please Read)

Great pre-owned condition with light cosmetic wear consistent with normal office use.

• No broken keys

• No sticky buttons

• Palm rest clean and intact

• Mouse tracks properly

See photos for exact condition.

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Shipping

Ships fast and securely from the U.S.

Keyboard will be carefully packaged to protect the palm rest and key structure.

Tracking uploaded immediately after shipment.

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Perfect For:

• Work-from-home professionals

• Programmers & writers

• Office ergonomic upgrades

• Replacing discontinued Microsoft ergonomic models

• Corporate workstation deployment

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Check Out Our Store

We regularly carry:

• Microsoft ergonomic keyboards

• Logitech K350 wave keyboards

• Microsoft Sculpt ergonomic models

• Retro & discontinued office tech

• Keyboard & mouse bundles

Message us for multi-unit or bulk pricing.