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Lenovo 300 USB Combo, Full-Size Wired Keyboard & Mouse, Ergonomic, Left or Right Hand Mouse, Optical Mouse, GX30M39606, Black
Lenovo

Lenovo 300 USB Combo, Full-Size Wired Keyboard & Mouse, Ergonomic, Left or Right Hand Mouse, Optical Mouse, GX30M39606, Black

4.4(1.4K+ reviews, all variants)
Amazon's Choicebudget$0-$49500+ bought in past month
#98 in Computer Keyboard & Mouse Combos
layout
Full-Size
weight
1.76 ounces
compatible
Laptop, Personal Computer
mechanical
Optical
connectivity
Usb

Want the best price and purchase timing?

Our AI advisor analyzes real-time pricing across all channels to find you the best deal.

AI Verdict

A wired, full-size keyboard with island keys and a 1600 DPI ambidextrous optical mouse, best for basic office or home use on a tight budget.

Situational Fit

This combo is a solid pick if you absolutely need a wired, full-size setup with a waterproof keyboard and a 1600 DPI optical mouse for under $50. Its plug-and-play nature and ambidextrous mouse make it easy to get started for basic tasks. However, the reported mouse issues with specific software and key placement quirks mean it's not a universal recommendation.

If you need more consistent mouse performance or a more ergonomic keyboard layout, look for combos with higher polling rates or adjustable key spacing.

Regret Score™

High Risk

Lower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity

46/100
vs. 518 Keyboards we've analyzedSafer than 25%
Hidden Defects
9/35

Issues discovered after purchase

Achilles' Heel
17/25

Critically weak dimension

Expectation Gap
9/20

Amazon rating vs actual quality

Fit Risk
11/20

Chance this product isn't for you

BuyChoice Score
2.7

Pros

  • Keyboard features a waterproof exterior, protecting against accidental spills.
  • The full-size keyboard uses an island key design with a 2.5 zone layout, including a separate number pad.
  • The mouse offers 1600 DPI resolution for precise tracking.
  • The full-size mouse is ambidextrous, fitting both left and right hands comfortably.
  • It's plug-and-play, requiring no setup for Windows 7, 8, 8.1, 10, or 11.
  • Users report low-profile keys that don't make much noise.

Cons

  • The mouse can exhibit slowness or 'hanging' during use, particularly with demanding software like Adobe products.
  • Some users find the mouse too large for comfortable use.
  • The arrow keys are positioned very close to the Shift key, leading to accidental presses.
  • The mouse feels flimsy to some users after extended use.
  • The keyboard lacks backlighting, which can be an issue in low-light environments.

Dimension Scores

Typing Feel6/10

Users report low-profile, quiet island keys that feel similar to older Lenovo laptop keyboards, which some find comfortable for writing.

Connection Stability8/10

As a wired USB combo, it offers a consistently reliable connection without the interference or battery concerns of wireless alternatives.

Backlighting1/10

The keyboard does not include any backlighting, making it unsuitable for low-light environments.

Build Quality5/10

The keyboard features a waterproof exterior for spill protection, but some users describe the mouse as feeling flimsy.

Best For

  • Basic data entry and document creation in an office setting.
  • Home users needing a simple, wired keyboard and mouse for everyday tasks.
  • Students using a desktop or laptop for schoolwork.
  • Anyone needing a spill-resistant keyboard for a shared or high-traffic workspace.

Not Recommended For

  • Graphic designers or video editors who need precise, lag-free mouse performance.
  • Gamers who require advanced features, macro keys, or a high polling rate mouse.
  • Users who prefer a wireless setup for a clutter-free desk.
  • Anyone needing a keyboard with adjustable backlighting.

Watch Out For

  • The mouse has been reported to 'hang up' or be slow when left-clicking frequently, especially with software like Adobe.
  • Some users were misled by product images and expected a wireless combo, only to receive a wired one.
  • The keyboard's arrow keys are positioned very close to the Shift key, which can cause typing errors.
  • The mouse, weighing 120g, is considered too large by some users, impacting comfort.

Full Specifications

ASINB0837XJRR6
BrandLenovo
ColorBlack
Series300 Wired Combo
Batteries1 Nonstandard Battery batteries required.
Item Weight1.76 ounces
ManufacturerLenovo
Power SourceCorded Electric
Special FeatureSpill
Operating SystemWindows
Hardware PlatformPC
Item model numberGX30M39606
Compatible DevicesLaptop, Personal Computer
Product Dimensions16.69 x 5.76 x 0.8 inches
Item Dimensions LxWxH16.69 x 5.76 x 0.8 inches
Connectivity TechnologyUsb

What Buyers Say

The main surprise here is how many users specifically call out the mouse for performance issues, especially when doing detailed work. While the keyboard generally gets a pass for its low-profile, quiet keys, the mouse's tendency to 'hang up' or be slow, particularly with software like Adobe, is a recurring complaint. Some folks also found the mouse physically too big, and the arrow keys on the keyboard are apparently a bit too cozy with the Shift key, leading to mis-hits.

“Keyboard's fine, whatever, but this mouse is driving me nuts, it keeps freezing up when I'm trying to edit photos and I just want to throw it across the room.”

Common Praise

  • Keyboard keys are smooth and easy to type on.
  • Low-profile keys don't make much noise.
  • Plug-and-play functionality with no setup required.
  • Good for basic office tasks and schoolwork.
  • Waterproof exterior provides protection against spills.
  • Feels like an old Lenovo laptop keyboard, which some users prefer.

Common Complaints

  • Mouse hangs up or is slow, especially with Adobe software.
  • Mouse feels flimsy to some users.
  • Arrow keys are too close to the Shift key, causing accidental presses.
  • Some users found the mouse to be too big.
  • Misleading product images led some to expect a wireless combo.

Ownership Tips

  • The mouse's performance issues, particularly with left-clicks, become noticeable during prolonged use with precise applications.
  • The close proximity of the arrow keys to the Shift key can be a persistent annoyance, even after getting used to the keyboard.
  • The 'waterproof' feature is more about spill resistance, not full immersion, so don't go washing it in the sink.
  • The overall feel is definitely budget-tier, so don't expect premium materials or a heavy, stable build.

Frequently Asked Questions

Is this keyboard and mouse combo wireless?

No, this is a wired combo that connects via USB. Both the keyboard and mouse require a USB port on your computer.

Does the keyboard have backlighting?

No, the Lenovo 300 USB Combo keyboard does not feature backlighting. It's a basic, full-size keyboard designed for general use.

Is the keyboard spill-resistant?

Yes, the keyboard has a waterproof exterior designed to protect against accidental spills, which helps maintain its functionality.

Can I use this with a Mac?

While designed for Windows (7, 8, 8.1, 10, 11), wired USB keyboards and mice generally work with macOS for basic functions. However, specific hotkeys or advanced features might not be fully compatible.

What is the DPI of the mouse?

The included optical mouse has a resolution of 1600 DPI, which provides precise tracking for general computing tasks.

Is the mouse comfortable for left-handed users?

Yes, the full-size mouse is designed to be ambidextrous, meaning it's comfortable for both left and right-handed users.

Buying Guide

When you're looking at a keyboard and mouse combo like this, you need to think about how you actually use your computer. Are you just typing emails and browsing, or are you doing detailed work? Wired means no batteries to worry about, but also a cable on your desk. 'Full-size' means you get a number pad, which is great for data entry, but takes up more space. The mouse's DPI tells you how sensitive it is; 1600 DPI is fine for most, but not for super-precise tasks.

Connectivity: USB Wired

This means both the keyboard and mouse connect directly to your computer with a cable. You'll never need to change batteries, and you won't experience wireless interference or lag, which is a plus for consistent performance.

Layout: Full-Size, 2.5 Zone, Island Keys

A full-size layout includes a dedicated number pad, which is super handy if you crunch numbers. 'Island keys' means each key is separate, like Chiclets, which can help prevent dust and crumbs from getting underneath and might offer a quieter typing experience.

Mouse: 1600 DPI Optical

DPI (dots per inch) indicates how sensitive the mouse is. A 1600 DPI mouse moves the cursor a good distance across your screen with small hand movements. It's a standard resolution that works well for everyday tasks, but it's not as high as what you'd find on a gaming mouse for ultra-fine control.

Alternatives

If you need more precise mouse tracking or a quieter typing experience, look for combos with higher mouse DPI (2000+ DPI) or mechanical keyboards. For a cleaner desk, search for wireless combos, but be prepared for battery management.

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