I’ve commented on chupas post but now I decided to make a seperated post. After long painstaking search and failure of 2 different SSD it looks like I finally found a SSD that is cheap fast and most importantly works well on my jumper 3 pro v4. The SSD I’m on about is a BR SSD m.2. I think it’s short for Billion Reservoir. I have 240GB version and so far I’m more then happy. It gets detected every single time. My other 2 SSD were kingspec (which worked somehow) based on JMF667H controller but it didn’t got detected every other boot and gets really laggy due to constant data link reset. Next one was DogFish based on SM2246XT which gave up after 3 months of use and suffered from similar problems as Kingspec. Now it’s that BR SSD which as I said gets detected every time and it’s based on SM2246EN which compare to XT version of that controller has also NANYA 256MB DDR3 DRAM cache. I use it to run Linux on it and I’m more then happy with performance.