Product is working perfectly, but bare the price in mind when ordering it in combination with other products. I had ordered this together with 5 MR16 LED lamps, bringing the total price to 37,5 euros. Shortly afterwards, I had to personally go pick up my package which was held up at DHL due to duty costs of 17,66 euros ... that's almost 50% !
Unfortunately Miniinthebox.com is unable to predict these costs ... but their customer service has certainly done their best to communicate with me and try and find a solution.
I think it's best to place several small orders, in order to minimize duty costs. Because of the effort made by miniinthebox's customer service, I have placed and received multiple new orders by now and didn't suffer any extra costs perhaps because I try to stay under the 25 euro amount per order placed.
Update 1: two weeks after purchase and the USB presenter is working fine. Had to go buy new A23 batteries as I had left them in the device and apparently this drains the energy of the batteries fairly quickly (probably due to the hardware trying to communicate with the USB stick).
Once you know this however, the product is pleasing me quite well.