Where should the cable going from the POS printer port on the API be connected at a Verifone site?

The cable from the POS printer port on the API should be connected to the DVR journal port on the back of the POS because this port is specifically designed to facilitate the communication between the point-of-sale system and the printer. The DVR journal port is typically used for peripheral devices like receipt printers, ensuring that transaction data is printed correctly and in real time.

This connection allows the POS system to send transaction information directly to the printer for generating receipts, ensuring a seamless workflow during transactions. Connecting the cable to the DVR journal port optimizes functionality and ensures compatibility with the accounting and transaction processing systems inherent to the POS setup.

Other options, such as the MAIN POWER PORT or USB Port, would not be correct because they do not facilitate direct communication for printing purposes. The MAIN POWER PORT is intended for power supply rather than data transfer. The USB port, while often used for various peripherals, is not the intended connection point for the POS printer in this specific setup, which utilizes the DVR journal port for its designed interactions.