COMPTIA A+ Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

The connection type that has a maximum speed of 1.5 Mbps is USB 1.0/1.1. The original USB 1.0 specification provided a maximum transfer rate of 1.5 Mbps, known as low-speed USB, which was suitable for devices that did not require higher bandwidth. USB 1.1 maintained this same low-speed option but also introduced a higher speed mode that allowed a maximum transfer rate of 12 Mbps.

In contrast, USB 2.0 significantly increased transfer speeds, offering up to 480 Mbps, which far exceeds the 1.5 Mbps limit. HDMI (High-Definition Multimedia Interface) is primarily used for transmitting high-definition video and audio signals and operates at much higher speeds. Ethernet connections can vary widely, with standard speeds starting at 10 Mbps and going up to 1 Gbps or more in common networks. Therefore, USB 1.0/1.1 is the correct answer for the specified maximum speed of 1.5 Mbps.