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The logic board supports one high-density floppy disk drive (Apple SuperDrive). The drive is connected to a 20-pin connector on a cable that is connected to the main logic board.
The logic board supports an internal hard disk that uses the standard ATA-2 interface. The implementation of the ATA interface on the Power Macintosh G3 computers is a subset of the ATA interface specification, ANSI proposal X3T9.2/90-143, Revision 3.1.
The internal hard disk has a standard 40-pin ATA connector and a separate 4-pin power connector. The 40-pin connector cable is attached to the main logic board. The power cable is attached directly to the power supply.
The Power Macintosh G3 computers have a 24X-speed internal ATAPI CD-ROM drive. The CD-ROM drive supports the worldwide standards and specifications for CD-ROM and CD-digital audio discs described in the Sony/Philips Yellow Book and Red Book. The drive can read CD-ROM, CD-ROM XA, CD-I, and PhotoCD discs as well as play standard audio discs.
The CD-ROM drive has a sliding tray to hold the disc. The drive features a mechanism that supports 4X, 8X, 12X, and 24X data transfer rates and a data buffer that further enhances performance.
A Zip drive is available as a build-to-order option at the time of purchase. In the Power Macintosh G3 All-in-one and original Power Macintosh G3 computers, the Zip drive was a SCSI device connected to the internal 50-pin SCSI connector on the main logic board. In Power Macintosh G3 desktop and tower computer configurations with ROM subversions V4.5 F1 or V4.5 F2, the Zip drive is an ATAPI drive and is connected in a Device 0/1 configuration on one of the two ATA channels of the main logic board.