Hi fellows, I need help. my PVT581 microUSB port shows up in Win7 as non recognized device under USB. (error 43) same port, same cable connects to Phantom no problem (it showed up as a COM3 port in windows device manager) installed DJI Win driver, and tried different cables, different ports and different laptops, no success. can someone share any experience fixing that? I saw someone on youtube using an USB extension cable (to extend the length) it failed to connect, but without extension cable, it would work... is the length so sensitive? (and OEM DJI cable wouldn't work? doesn't make sense). thanks.