1080i/720p,RMVB,Support 2.5" Sata HDD inside,AV、YUV、USB2.0/OTG、SD card socket、DC socket1.Function:2.5"potable HDD Muti-Media Player,high speed data transfer rate at 480Mbps（60MB/s）2.Data interface:One USB Host which can plug in an external large capacity hard disk, from which can copy the data to the hard disk, as well as hard disk to the external hard disk3.Aspect ratio:4:3 and 16:9 4.Support Hard disk:Built-in 2.5" hard disk 5.HDD Format support:FAT32 and NTFS 6.Cards support:SD card, can copy the data from card to hard disk 7.Channel output:Left, Right,and Stereo audio output 8.Picture format:JPEG，BMP,GIF etc "9.Video media format:MPEG4: AVI, DivX, XviD,RM,RMVB MPEG2(DVD): AVI, VOB MPEG1(VCD): AVI, MPG, DAT "10.Audio media format:WMA，MP3 11.TV standard:Auto/PAL/NTSC 12.E-book function:Support TXT reading 13.OS Compatibility:WIN98SE/2000/2003/XP/VISTA，LINUX，MAC and so on（WIN98SE and MAC8.6 need driver)"14.Language:Support multi-language,such as Simple Chinese,Traditional Chinese,English and so on(And support software update) "15.Support flip, zoom in and out auto play, and with background musical when you enjoy the picture.16.With external 5.2V/2A Switching adaptor