... card(or built-in memory) by simply inserting an USB flash drive,no need to take out of the memory card ... DAT/MPG1),MP3,JPG,WMV,AVI,etc2.Paly from:Memory flash:CF card,SD card or USB(32M-16GB) Built-in ... flash memory:(optional) USB:high speed USB 2.0(Host)3 ... on bus,train,subway and other vehicles. 19" LCD Advertising player for Bu, Train and Subway (15, 17, 19, 22")