Logitech K400 Plus vs K780: Built-In Pointer or Three Typing Hosts?
Choose K400 Plus for its built-in touchpad on a compatible receiver-equipped computer, including one connected to a TV. Choose K780 when you want to select between three compatible typing devices and can handle pointing separately. Neither provides both the integrated pointer and three selectable typing channels.
Published by Pickoryx · Published 2026-10-09
Source checked 2026-10-09 19:32 UTC
Products compared
Product A · ASIN B014EUQOGK
Logitech K400 Plus (Black, 920-007119)
Last observed offer
$27.58 List Price: $34.99
Per listed package.
Checked 2026-10-19 13:46 UTC. Price and availability may change.
Product B · ASIN B01LZTBKBG
Logitech K780 (Dark Grey/Speckled White, 920-008025)
Last observed offer
$61.99 List Price: $69.99
Per listed package.
Offer eligibility must be confirmed on Amazon.
Checked 2026-10-19 13:16 UTC. Price and availability may change.
Pickoryx may earn a commission from qualifying purchases through the paid Amazon links on this page, at no added cost to you.
The buying question
Must cursor control be built into the keyboard, or must the keyboard select among three typing destinations?
K400 Plus combines typing and pointing at one receiver-equipped host; K780 selects three typing hosts but leaves pointing separate.
Quick verdict
Choose Logitech K400 Plus (Black, 920-007119) if
- You want typing and cursor control in one keyboard for one compatible USB-receiver host.
Choose Logitech K780 (Dark Grey/Speckled White, 920-008025) if
- You regularly type on a compatible computer, phone and tablet and need a dedicated selector for each.
When the recommendation changes
- If both an integrated pointer and three selectable typing channels are mandatory, neither meets both requirements.
- If an intended host does not meet the chosen connection’s requirements, reconsider the setup before buying.
The differences that matter
Integrated Pointing
What this changes: Choose K400 Plus when cursor control must stay on the keyboard. With K780, keep a separate pointing method available wherever your work needs one; typing-host selection does not supply a pointer.[1, 3, 5, 4, 2]
Intended Host Selection
What this changes: For a compatible computer, phone and tablet used regularly, K780 lets you choose the typing destination at the keyboard. K400 Plus fits one receiver-equipped target; it is not a substitute for those three selectable typing channels.[1, 3, 2, 4, 5]
Best for your routine
Control one TV-connected computer without a separate mouse
Best fit: Logitech K400 Plus (Black, 920-007119)
Based on listed features, not comparative testing.
The K400 Plus touchpad provides the pointer on the keyboard. Confirm the computer meets its USB-receiver and OS requirements; this is not a promise of direct smart-TV support.
Keep a computer, phone and tablet as regular typing destinations
Best fit: Logitech K780 (Dark Grey/Speckled White, 920-008025)
Based on listed features, not comparative testing.
K780 provides three selectable typing channels. A supported USB computer plus two supported Bluetooth mobile devices is a useful setup; keep each device’s needed pointing method separate.
Value and trade-offs
One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.
Compare the current total cost of the setup you actually need. If K780 costs more, its three typing channels must be useful enough to justify that cost plus any separate pointer you still need. Paying more does not make it a touchpad keyboard.
There is not enough verified price history here to recommend buying now or waiting.
Limitations
- These are feature-fit recommendations, not measured typing-speed, comfort, touchpad-quality, wireless-reliability or battery-life rankings.
- K400 Plus 920-007119 has an unresolved key-legend localization conflict: Logitech currently labels it English International and uses a UK gallery. Check the offered keyboard layout before buying; do not assume US legends.
- Published host requirements do not verify every television, operating-system version or app. No automatic separate-mouse host switching, receiver reuse or current receiver re-pairing workflow was tested.
Questions shoppers ask
Can I plug either keyboard directly into any smart TV?
No universal TV compatibility is established. For K400 Plus, the straightforward use case is a compatible computer connected to the TV, with the receiver plugged into that computer. Check the television’s own keyboard, pointer and app support separately if you intend direct TV use. K780 also needs a host that supports its chosen connection route.
What should I check for a computer, phone and tablet setup?
For K780, check every host before assigning its three typing channels. The included receiver requires a USB port and supports Windows 10/11 or later, macOS 10.14 or later, or ChromeOS. Bluetooth requires Bluetooth Smart keyboard HID support and a listed OS: Windows 10/11 or later, macOS 10.15 or later, ChromeOS, iOS 11 or later, iPadOS 13.4 or later, or Android 7 or later. K400 Plus instead requires a USB-receiver host with external-keyboard support and Windows 10/11 or later, Android 7 or later, or ChromeOS; its current requirements do not list macOS or iOS.
Does a K780 device-selection key also move my mouse to that device?
Treat it as selecting where the keyboard types. A separate mouse needs its own compatible connection and switching arrangement; do not buy K780 on the assumption that the keyboard’s buttons automatically switch that mouse.
Can I use the same setup software for both?
Check each model separately: the current K400 Plus specifications name optional Logitech Options, while K780 names Logi Options+ for Windows and macOS. Older K780 guide references to Logitech Options or Unifying software are not a current download or re-pairing recommendation.
Methodology and sources
We compared two separate requirements: pointing built into the keyboard and selecting the intended typing host. Current product-page compatibility requirements take precedence over older guide minimums.
AI-assisted research organized the manufacturer evidence and checked consistency across the buying advice.
View 5 sources
- 1.K400 Plus exact 920-007119 product specificationsLogitech · Official specifications · Source checked 2026-10-09 19:31 UTC
Evidence used on this page
- Exact representedProductId and packageContents; current systemRequirements and Connection Type: Integrated touchpad, receiver connection, current host requirements, package, optional Logitech Options and exact variant label.
- 2.K780 exact 920-008025 product specificationsLogitech · Official specifications · Source checked 2026-10-09 19:31 UTC
Evidence used on this page
- Exact representedProductId, productImages, packageContents, systemRequirements; Multi-device flow and customization app: Three-device selection, Unifying and Bluetooth connections, current host requirements, package, exact variant and Logi Options+ support.
- 3.Logitech education catalogue: K400 Plus 920-007119Logitech · Official specifications · Source checked 2026-10-09 19:32 UTC
Evidence used on this page
- Page 2 SKU-labelled 920-007119 tile; full keyboard physical layout: Complete SKU-labelled physical layout has touchpad and mouse buttons, with no three-device selector keys.
- 4.K780 Multi-Device Keyboard guideLogitech · Official specifications · Source checked 2026-10-09 19:32 UTC
Evidence used on this page
- Overview; Get Connected; Dual Connectivity; Bluetooth and receiver setup: Complete hardware overview, three Easy-Switch typing channels and supplied pre-paired receiver. Legacy software instructions and OS minimums are not current buying advice.
- 5.K780 Dark Grey/Speckled White complete top viewLogitech · Official specifications · Source checked 2026-10-09 19:32 UTC
Evidence used on this page
- Whole top-view image linked by exact 920-008025 product variant: Whole keyboard top view linked to the exact speckled variant shows three numbered selector keys and no integrated pointer surface.