< | No | Touchpad enumerates as a mouse |
| 360 Phonebook / NexDock 360 / Uperfect X | No | Touchpad enumerates as a mouse |
| HP Elite x3 Lap Dock (using a [Wacom Link Plus](https://amzn.to/3lD0snt)) | Yes | Too bad the cursor is floaty/laggy |
| Motorola Atrix Lapdock | No | Touchpad enumerates as a mouse |
| Leef | No | via Leef developers, not personally tested |
| [pi-top Bluetooth Keyboard](https://amzn.to/3vPVCaO) | No | Touchpad enumerates as a mouse |
# Can I use the lapdock as a keyboard/trackpad/battery, without using the display?
| Device | Y/N | Notes (links are Amazon links) |
| ------ | ------ | ------ |
| 360 Phonebook / NexDock 360 / Uperfect X | No | Tried with [an HDMI dummy plug](https://amzn.to/3r3Zvp3) |
| HP Elite x3 Lap Dock | Yes | Using the Wacom Link Plus |
# Will the lapdock battery power a Pi 4 without issue?
I use this [power test script](https://bia.is/2019/02/02/raspberry-pi-check-your-power-supply/) to see if undervoltaging occurs. Most of my testing includes a wireless mouse with an RF dongle.
| Device | Y/N | Notes |
| ------ | ------ | ------ |
| Sentio Superbook / Pi Book Pro | Yes | Using stock firmware only |
| 360 Phonebook / NexDock 360 / Uperfect X | Yes | No additional USB ports through which to provide extra power to a hub or SATA adapter |
# Can I reliably power an external SSD while traveling?
If you're getting undervoltage warnings and need to power your external SSD while on the go with your lapdock, you have four options:
- a USB 3.0 hub that takes 5V power, so you can power it from a USB power bank;
- a USB 3.0 cable with a power injector;
- if you're using a 2.5" internal SATA SSD in an enclosure, switch to an enclosure with a 5V power input;
- or try a SATA-to-USB cable with a power input.
In all of these cases, you really want to look for 5V DC power inputs, or USB/micro-USB power inputs. A 5V DC power input can be fed from a USB power bank. Most devices seem to want 12V/2A or 12V/3A, unfortunately. (You _can_ get USB 5V to 12V step-up cables, but it drops the amperage unusably low as a result.)
| Device (links are Amazon links) | Y/N | Notes |
| ------ | ------ | ------ |
| [ORICO 4-port USB hub](https://amzn.to/317htN3) | Yes | Has a micro-USB port for additional power. Tested powering a single 2.5" internal SSD in an enclosure. |
| [MiniPro 2.5" SATA to USB 3.1 (USB-C) aluminum enclosure](https://amzn.to/391JWs3) | | Not tested yet, but the only 5V 2.5" enclosure I've found. It'll need a USB to DC adapter cable like [this Duttek one](https://amzn.to/2PjeeQ4) to power it from a USB power bank. |
| [Cable Matters USB to SATA adapter](https://amzn.to/3lCSue3) | No | Has a micro-USB port for additional power. Continued to get undervoltage warnings with it. |
Your choice of USB 3.0 SSD will affect your power needs; proper external SSDs seem to have lower power requirements than 2.5" internal SATA SSDs in a USB 3.0 enclosure, but there's an interaction between the SSD and the adapter, too. This [TweakTown study of SSDs and their effect on laptop battery life](https://www.tweaktown.com/articles/8856/best-ssds-notebooks-two-year-study/index.html) shows an hour or more of difference between the lowest- and highest-power SSDs. I haven't yet found something similar for the power consumption of USB-to-SATA adapters.
# Colophon
As an Amazon Associate I earn from qualifying purchases.
Updated March 23, 2021 with the SSD report. Updated March 21, 2021 with SATA cable details.
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