Shop the researched models
These Amazon links are affiliate links. Daily Carry Lab may earn a commission from qualifying purchases. Match the model and included contents to your needs; this guide is based on manufacturer-source research, without hands-on testing.
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ProtoArc XK01 TP
Black · US QWERTY · touchpad
View ProtoArc XK01 TP — Black · US QWERTY · touchpad on Amazon -
Logitech K400 Plus
Black · 920-007119
View Logitech K400 Plus — Black · 920-007119 on Amazon
By Daily Carry Lab. Primary documentation checked October 15, 2026 (Pacific).
Affiliate disclosure: As an Amazon Associate, Daily Carry Lab earns from qualifying purchases. Retailer links may earn a commission at no extra cost to you.
Research disclosure: We have not tested these products. We select exact models using manufacturer documentation, documented compatibility and the practical decisions below. No DCL ratings, measured results or health outcomes are claimed.
Choose a standalone keyboard with a touchpad when a separate mouse would consume desk space or add another item to pack. The ProtoArc XK01 TP folds and switches among three Bluetooth channels. The Logitech K400 Plus is a fixed-size alternative for a compatible host with a USB receiver connection. K400 Plus is not a Bluetooth keyboard.
We selected these exact models for their integrated pointing controls and documented connection methods. This comparison is about typing and pointing from one standalone accessory; it does not replace our travel-keyboard guide or the device-specific iPad keyboard-case guide.
Compare the complete input setup
Scroll horizontally to read all comparison columns →
| Exact candidate | Connection and switching | Documented size and mass | Power task |
|---|---|---|---|
| ProtoArc XK01 TP, black US QWERTY | Three Bluetooth channels; integrated touchpad | Folded 215.5 × 119.7 × 20.9mm; open 386.4 × 119.7 × 12.4mm; 297g | Recharge the keyboard through USB-C |
| Logitech K400 Plus, black 920-007119 | Logitech Unifying USB receiver; no three-device Bluetooth switching documented | 354.3mm wide × 139.9mm high × 23.5mm deep; 390g listed | Two AA batteries supplied; receiver included |
Sources: ProtoArc product specifications, its XK01 TP manual, and Logitech K400 Plus specifications. Published weights are not a DCL comparison of complete kits with cases and adapters.
Check the open footprint as well as the packed one. Folding makes the ProtoArc shorter in a bag, but the open keyboard is wider than K400 Plus. Draw that width on your intended work surface and leave space for the tablet or screen stand. A small packed rectangle does not establish that the unfolded keyboard fits a tray table.
Check pointing support separately from typing
Scroll horizontally to read all comparison columns →
| Host decision | XK01 TP documentation | K400 Plus documentation |
|---|---|---|
| Windows | Gesture table specifically covers Windows 10/11 | Maker lists Windows support; receiver needs a USB connection |
| Android | Manual separates Samsung tablet/phone examples on Android 12+ and warns gestures vary by device | Maker lists Android support, subject to the host accepting the USB receiver |
| Mac or iPad | Manual has macOS 12+ and iPadOS 13.4.1+ gesture sections; some gestures depend on the app | These are not supported-platform recommendations from the reviewed K400 Plus page |
ProtoArc’s general keyboard compatibility list is broader than its detailed gesture tables. Do not read the broad list as a promise that every gesture works on every listed OS. The manual explicitly excludes Force Click and haptic feedback on Mac. Verify the shortcuts and gestures your actual app needs before committing to this setup.
For a USB-C-only host and K400 Plus, a physical adapter is only the first step: confirm the host supports that receiver and input method. We have not verified any particular hub-receiver-tablet combination. Avoid selecting the K400 merely because a retailer calls it wireless; that word does not mean Bluetooth.
Charging, layout and daily handling
The XK01 TP’s USB-C connection is documented for charging; we do not establish wired USB keyboard operation. Its page and manual use differing standby/battery figures, so this guide does not turn those numbers into typing endurance. Plan to recharge and check the battery before leaving.
K400 Plus instead adds replaceable batteries and a small receiver to your packing list. Give the receiver a consistent storage place. That setup can be reasonable for one compatible computer, but it is a different workflow from Bluetooth channel switching among a phone, tablet and laptop.
Confirm the physical key layout shown for the exact order. US and UK layouts are separate variants, and regional punctuation differences matter when writing or coding. Test your essential shortcuts, scrolling and right-click actions on the intended device during the return period. This is a verification step for the buyer, not a test we have performed.
Budget and drawbacks
Scroll horizontally to read all comparison columns →
| Candidate | Budget evidence | Main compromise |
|---|---|---|
| XK01 TP black US | Current checkout total unknown; account for any needed device stand | Folding joints and OS-specific gestures require checking; rechargeable battery |
| K400 Plus 920-007119 | Current checkout total unknown; include an adapter if appropriate | Fixed packed size, USB receiver dependence and narrower documented platform scope |
| Existing keyboard plus pointing device | No new keyboard purchase if it meets the need | More separate pieces and workspace requirements |
Neither model receives a typing-comfort, cursor-precision or durability score here. Choose only after connection, pointing support, layout and the full open footprint match the work you need to do.
Sources and limits
This guide compares published specifications and source documentation. Daily Carry Lab has not performed hands-on tests of the products in this guide. Consult the dated sources and verify the exact model and current terms before buying.
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