... 3 (16/9 letterbox), 16:9 (4/3 pillar box) * User friendly OSD and operation * Total 4,000 ... RS232 * MP3 File Play by USB 2.0* PVR Ready via USB 2.0* Multimedia file play by USB ... Flash Memory : 4Mbytes * DDR II Memory : 512Mbytes * Channel Capacity Digital Channel: 4,000 * Front : 1 Key (Power), 7-SEGMENT DISPLAY ... 90Mbit/s * Aspect Ratio: 4:3, 16:9, Letter Box * Frame Rate: 25Hz for PAL, 30Hz for NTSC * ...