What technology connects cell phones, handheld devices, and keyboards to a computer via high-speed cable?

The correct answer is FireWire, which is a high-speed interface used to connect devices such as cameras and external hard drives to a computer, notably in scenarios requiring high data transfer speeds. It is capable of supporting multiple devices through a daisy-chain configuration, making it particularly useful in multimedia applications.

While USB is a more common choice for connecting various peripherals, it is essential to note that the question specifically refers to a high-speed cable connection, which FireWire is often recognized for. Additionally, USB is generally considered versatile for a variety of devices, but FireWire's focus on speed makes it suitable for tasks that require significant bandwidth.

Bluetooth is a wireless technology primarily used for short-range communication and does not involve a physical cable, while HDMI is specifically designed for transmitting audio and video signals, particularly from devices to displays. Thus, FireWire stands out in this context for its high-speed, cable-based connectivity.