Which port on the controller is used to send and receive bumpbar data?

• A. USB ports
• B. HDMI ports
• C. Ethernet ports
• D. Serial ports

Answer: (D)

Bump bar data is best carried over a serial connection because this type of peripheral sends simple, low‑latency signals that the controller can read directly as characters or codes. A serial port provides a straightforward, point‑to‑point link with configurable timing and handshaking, which is ideal for reliably transmitting the quick button-press events a bump bar generates. USB, Ethernet, and HDMI serve other roles—USB is a general-purpose interface that often involves device enumeration, Ethernet is for networking, and HDMI carries video—so they aren’t the typical paths for sending raw bump bar data to the controller. Therefore, the port used for bump bar data is the serial port.