 The 170 also dropped the external floppy disk port (only the Macintosh Classic II still had one) and made no provision for a second internal floppy disk port (a feature also missing from the rest of the desktop line by this time).Overall, it had roughly the equivalent features and performance of the powerful Macintosh IIci desktop in a laptop.The 170 was introduced with System 7.0.1, specifically to support new power management and other unique hardware features.