... PortSD CARD(512MB-8GB)Sound EffectBuild-in stereo speaker2 Jacks MIC in & Headphone outBattery1800mAHWorking time3 hours(standby time 4 hours)Weight0.86KGAccessoryAC ... .I/O: 1*26pin,Adapter(1 x RJ45 ,3x USB),Headphone, MIC,DC JACK, Micro SD Card8.Keyboard: 80-keys QWERT keyboard9 ...