希腊采购需求：触摸显示屏、触摸显示器、POS机、触摸解决方案、销售点、数字标牌

I'm reaching out regarding the all-in-one machine I currently have. I need some clarification about the serial ports associated with this unit. Could you provide the names or designations for the various ports, such as COM1, COM2, etc.? Understanding this will help me better utilize the machine. Additionally, if there are any manuals or diagrams available that detail the ports and their functions, it would be greatly appreciated. Having access to this information will ensure I can maximize the efficiency of the machine. Thank you for your assistance!