... floor standing support CF,SD,MMC,MS card and USB easy to move 42inch digital signagepanel size :42inch real color LCD screenaspect ratio ... : 1000:1responsice time : 8msbuilt-in two stereo speakerssupport CF,SD,MMC,MS card number of color :16.7Mtwo piece of keys available ... ,WMA, AAC, PCM 3. playing media: flash memory card: CF,SD, MMC,MS card and USBUSB: high speed USB 2.0 (host) applicable ...