Click on the name of your specific audio driver listed immediately below in the left column. Click the Control Panel button in the center of the window.
In a Windows environment, the OS typically buffers audio to prevent dropouts during multitasking. While stable for playback, this introduces significant latency (often >100ms), rendering real-time monitoring and recording impossible. The ASIO driver in Cubase 5 requests a direct memory mapping to the hardware buffers. This allows for round-trip latencies often lower than 10ms, provided the hardware buffer size is set appropriately (e.g., 128 or 256 samples).
During the Cubase 5 lifecycle, Windows XP and Vista were the primary operating systems. A critical aspect of the driver architecture was IRQ (Interrupt Request) management.