收银机的背面面对的是客户，所以背面的美观也至关重要，收银机背面设计了藏线位，背面更加简洁
The back of the cash register faces the customer, so the beauty of the back is also very important. The back is designed to hide the power cord, which is more concise
预留了第二个屏幕安装位，商家可以根据需求安装第二块屏幕
A second screen installation position is reserved, and merchants can install the second screen according to their needs
