A:AnswerNo, The JCD383 requires the connected device to support DisplayPort alternate mode for a display output. Unfortunately the Samsung A20 does not support this feature.
A:AnswerYes, the JCD383 supports 4k up to 30 Hertz.
** Feel free to contact the Technical Support team mentioned on the packaging for further assistance or if you have any other questions and someone will be glad to assist you.
A:AnswerYes, you can connect another USB to HDMI device to the JCD383 and that will work.
** Feel free to contact the Technical Support team mentioned on the packaging for further assistance or if you have any other questions and someone will be glad to assist you.