Canon PowerShot A400 Quick Start Manual page 159

OS
Mac OS 9.0 - 9.2, Mac OS X (vl 0.1/v1 0.2/v1 0.3)
Computer Model The above OS should be pre-installed on computers with built-in USB
ports.
CPU PowerPC
RAM Mac OS 9.0 - 9.2: 64 MB or more of application memory
Mac OS X (v1 0.1/v1 0.2/vl 0.3): 128 MB or more
Interface USB
Free Hard Disk
• Canon Utilities
Space - !mageBrowser: 120 MB or more
- PhotoStitch: 30 MB or more
Display 800 x 600 pixels/ 32,000 Colors or better is required
1,024 x 768 pixels or better is recommended