ddr commercial display motherboard with usb upgrade

{"cid":"91223339","title":"DDR Standard 4G Commercial Display Motherboard with USB U Disk T Card Network Upgrade and Single Channel 4R 20W Speaker Output","imgUrl":"https:\/\/img.chinax.com\/nimg\/b8\/1a\/62b231f4650c183693093b35d8da-200x200-1.jpg","attrs":{"Price":"60~80 USD","Brand Name":"YNH","Model Number":"536","Minimum Order Quantity":"100","Delivery Time":"5-8days","Place of Origin":"Shenzhen","Certification":"UL","Packaging Details":"100pcs per box","Payment Terms":"T\/T","EMMC":"Standard 32G ( 64G \/ 128G \/ 256G Optional )","USB interface":"7, 1 USB3.0 _OTG , 1 USB3.0 _HOST , 5 USB 2.0 _HOST","Warranty":"1 Year","Speaker output":"Supports Single Channel 4R\/ 20W Speaker","RTC Real Time Clock":"The Battery Supports Time Memory For 3 Years And Supports Timed Power On And Off","LCD Output":"LVDS\uff0cmipi\uff0cEDP\uff0cHDMI\uff0cVbyone","DDR":"Standard 4G ( 8G\/16G Optional ) LPDDR 4","CPU":"Rockchip RK3576 , Octa -core, 2.2 GHz"}}