What characteristic is a limitation of PATA devices compared to SATA devices?

PATA (Parallel ATA) devices are known to have lower data transfer rates compared to SATA (Serial ATA) devices. The maximum data transfer rate for PATA is generally around 133 MB/s, while SATA can achieve data transfer rates starting from 150 MB/s and going up to several gigabits per second with newer versions. This fundamental difference in speed is due to the underlying technology; SATA uses a serial connection that allows for faster data transfer as multiple bits of data are sent sequentially over a single channel, whereas PATA relies on a parallel connection, which can be limited by the number of wires and the complexity associated with parallel data transmission.

The other characteristics mentioned, such as greater device compatibility, increased power efficiency, and a higher number of devices supported, do not align with the limitations of PATA when compared to SATA. In fact, SATA has an advantage in power efficiency and supports a greater number of devices per channel, along with improved compatibility with modern systems. Thus, the lower data transfer rates of PATA devices stand out as a distinct limitation in comparison to the capabilities of SATA devices.