Can any readers out there advise me on how to use these two devices? The platters on them appear to be motorized & use an ON/OFF switch. I’ve discovered the speed that these rotate is affected by the slider on the right hand side, also the “33” & “45” buttons. They also seem to have this rotating arm mounted on a pivot. These ‘arms’ seem rather light weight for carrying these devices around. What are the yellow & green discs for – are those the memory cards?? If so, I can’t find the memory card reader slot to insert these, nor can I find a USB port to get them to play on my computer. Does anyone know what website I can find the software & drivers needed to run them from my computer? What app do I need to get them to play on my Smartphone? Am I supposed to use a CD or DVD to get these to work? If so, I can’t find any pop-out tray to insert these. Is that pivoting arm used to read a CD or DVD? Help! #[email protected]*E$%@ new technology!