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Pro Great value for the price
The ASUS Tinker Board offers performance that outclasses other single-board computers in this price range. It can easily be used as a daily PC substitute and it can easily handle some tasks that competitors (like the Pi 3 for example) find difficult. Things like image editing, streaming Full HD videos, and even playing some simple browser-based games can easily be done on the Tinker Board.
Pro Fits on most Raspberry Pi cases
This single-board computer copies the form-factor of the raspberry pi to a T. The size is about the same and most of the connectors are at the same spots as the Raspberry Pi.
Pro Unique and pleasant aesthetic
Unlike most boards on the market, the ASUS Tinker Board is rather aesthetically pleasing as well. It has an array of colours which help distinguish the different connectors. Especially nice are the GPIO pin headers which are all colour-coded to identify the various types of pins.
Pro The official OS is quite complete out of the box
You can get the official Linux image for the Tinker Board website. It's actually a customized version of Debian that's changed to work as smoothly as possible on Tinker Board's hardware.
It comes with all the essential applications every PC has nowadays (web browser, text, editor, etc.) and some more specialized tools that are used to control the GPIO pins and that allow more advanced users to "talk" to the hardware.
Pro Gigabit Ethernet on board
And since it has a dedicated controller which is not shared with USB it's very fast an the speed doesn't depend on USB usage (and vice versa).
Pro Possible to connect an external WiFi antenna
Yes, you can add an external WiFi adapter to most SBCs but the ability to connect an external antenna to the embedded WiFi is a pretty rare feature.
Pro Built-in WiFi and Bluetooth
This board has built-in WiFi and Bluetooth capabilities.
Pro Previous Raspberry Pi owners will find themselves at ease with the GPIO library
The Tinker Board uses the same GPIO libraries as Raspberry Pi does. This means that users coming from Raspberry Pi who want to play around with the Tinker Board's GPIO pins will find it very easy to do so.
Con The support behind it is lacking
The technical support provided by ASUS is rather lacking, compared to competitors and knowing how important ASUS is in the tech world. The documentation is lacklustre, the official website is filled with marketing-speak without any actual valuable information for someone who has already bought the board, and to top it off, the download link for the official OS is hidden away inside the ASUS website in the drivers section.