Various causes: There are very many causes, from congestive heart failure, to lymphedema, to venous insufficiency, blood clots, pregnancy, a various other causes, including serious and not-so-serious causes.
I have a Sony DVP ns55p blu-ray player with a usb port in the front. The player requires that the usb flash device (thumb drive) be formatted in FAT32in order to recognize it.
SanDisk releases a faster, better USB-C flash drive. Dual connectors are always the choice when it comes to USB-C flash drives. SanDisk announced the second generation of its USB-C flash drive at Computex, and it's faster, retractable, and now there's a 128GB version. The SanDisk Ultra Dual Drive USB Type-C flash drive features USB-C and USB-A connectors, which can be accessed by using the slider on the side of the drive. SanDisk has improved transfer speeds, which now reach up to 150MB/s thanks to USB 3.1.