These boards are Made in China Uno R3 compatible boards.
While we prefer our customers to buy genuine Made in Italy Arduino Uno R3 boards, we have had many educational customers ask about lower cost Arduino alternatives due to school board budgets. So, we now offer the best Uno R3 clone we have come across. Fit form and function they run the same as a regular Uno R3, and they work great with the Arduino IDE.
If you do buy one of these, we strongly suggest you make a donation to the Arduino organization.