Alongside the transition to PCI, Apple began a gradual transition away from SCSI hard disks to IDE as a cost-saving measure, both for themselves and for users who wanted to upgrade their hard drives. The low-end 5200 and 6200 were the first to adopt IDE internal drives, though Apple's proprietary 25-pin external SCSI connector remained. The beige Power Macintosh G3 models being the last to include SCSI drives as standard, and it was the last Macintosh to include the external SCSI connector. When the Power Macintosh G3 (Blue and White) was introduced in early 1999, the port was replaced by two FireWire 400 ports. The Blue and White G3 was also the last Macintosh to include Apple Desktop Bus ports, a proprietary technology created by Steve Wozniak to connect keyboards, mice and software protection dongles such as those from Avid Technology. Two USB ports were also included, making this the only Power Macintosh to include both ADB and USB.