Introduction - If you have any usage issues, please Google them yourself
The black DSO138 are counterfeit kits from a company named SainSmart. Back in May 2015 this company purchased a few DSO138 samples from JYE Tech and then disappeared. A couple of month later this " smart " company started selling "their own" DSO138 kits. If you take a closer look at their kits you will find the PCB layout is identical to JYE Tech product. Not surprisingly, they used the same schematic, same component values for their kits, and ran the same firmware without JYE Tech permission. What they had done was just changed PCB color and added some no use pads, trying to make the board look different. They are stealing. It is shame for a company that appears reputable but behaves like a thief.