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.
Rated 5 out of 5 by Anonymous from Really good deal it's my 1st Blu-Ray player ever and is really kind of cool it can play usb and sd also besides Blu-Ray, Dvds and CDs and reads mp3 discs its also capable of playing 3D Discs. The player also has built in wi-fi to connect to the internet.