Pros

  • Only slightly larger than a thumb drive
  • Can be configured to include favorite utilities
  • Can be used to transfer data
  • Good collection of troubleshooting tools
  • Bootable emergency disk

Cons

  • No upgrade pricing options
  • Small capacity compared to a standard (and less expensive) portable hard drive
  • Must be reconfigured when switching between Intel and PowerPC Macs
  • Can’t boot very recent Macs