The Logitech® Wireless Touch Keyboard K400 Plus lets you experience PC-to-TV entertainment the way you Watch video, browse the web, chat with friends and much more. The all-in-one keyboard with touchpad ends the hassle—and clutter—of multiple devices. And a 10-meter (33-foot)¹ wireless range ensures your fun won’t be interrupted. Comfortable, quiet keys and a large (3.5-inch) touchpad make navigating entertainment effortless. Even setup is a snap thanks to the tiny, plug-and-play Unifying receiver. The 18-month² battery life means you might even forget the keyboard needs batteries. 1 Wireless range may vary depending on operating environment and computer setup. ² Assumes up to two hours typing per day. Actual battery life will vary with use, settings and environmental conditions.
| System requirements |
| Windows operating systems supported | Windows 10, Windows 11 |
| Mobile operating systems supported | Android 7.0, Android 7.1, Android 7.1.2, Android 8.0, Android 9.0, Android 10.0, Android 10 |
| Other operating systems supported | ChromeOS |
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| Weight & dimensions |
| Keyboard dimensions (WxDxH) | 354.3 x 23.5 x 139.9 mm |
| Keyboard weight | 390 g |
| Touchpad diagonal | 8.89 cm (3.5") |
| Touchpad width | 4.7 cm |
| Touchpad height | 7.6 cm |
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| Power |
| Power source type | Battery |
| Keyboard battery type | AAA |
| Number of batteries (keyboard) | 2 |
| Battery technology | Alkaline |
| Battery capacity | 2000 mAh |
| Service life of battery | 18 month(s) |
| Battery type | AA |
| Number of batteries supported | 2 |
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| Keyboard |
| Recommended usage | Universal |
| Device interface | RF Wireless |
| Keyboard layout | QWERTY |
| Keyboard language | US International |
| Pointing device | Touchpad + mouse buttons |
| Keyboard form factor | Mini |
| Numeric keypad | N |
| Keyboard keys operating life | 5 million characters |
| Hot keys | Y |
| Connectivity technology | Wireless |
| USB hub | N |
| Purpose | Universal |
| Fingerprint reader | N |
| Frequency band | 2.4 GHz |
| Noise level | 55 dB |
| On/off switch | Y |
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| Packaging data |
| Number of products included | 1 pc(s) |
| Receiver included | Y |
| Wireless receiver interface | USB Type-A |
| Batteries included | Y |
| User guide | Y |
| Package width | 31 mm |
| Package depth | 370 mm |
| Package height | 153 mm |
| Package weight | 530 g |
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| Design |
| Backlight | N |
| Product colour | Black |
| Keyboard style | Straight |
| Wrist rest | N |
| Surface coloration | Monochromatic |
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| Mouse |
| Mouse included | N |
| Mouse battery type | AA |
| Mouse battery life | 18 month(s) |
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| Features |
| Wireless range | 10 m |
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| Logistics data |
| Harmonized System (HS) code | 84716060 |
| Master (outer) case width | 171 mm |
| Master (outer) case length | 379 mm |
| Master (outer) case height | 321 mm |
| Master (outer) case gross weight | 5.76 kg |
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