introduced, it included the same internal and external expansion connections as other Macintosh models, all of which (save for audio input and output) were either wholly proprietary to, or largely exclusive to Apple computers. Over the next five years, Apple replaced all these ports with industry-standard connectors. The first generation of Power Macintoshes had shipped with NuBus, but by the end of 1993 it was becoming clear that Intel's PCI bus was going to be the widely adopted future of internal expansion. Apple's position as a relatively small player in the larger personal computer market meant that few device manufacturers invested in creating both NuBus- and PCI-compatible versions of their cards. The first PCI-based system was the range-topping Power Macintosh 9500, introduced in May 1995. This was followed shortly afterwards by the introduction of the "Power Surge" line of second-generation Power Macintosh systems – the Power Macintosh 7200, 7500 and 8500. The 8500 and 9500 were built around the new PowerPC 604, offering speeds starting at 120 MHz. InfoWorld's review of the 8500 showed a speed improvement in their "business applications suite" benchmark from 10 minutes with the 8100/100, to 7:37 for the 8500/120. They also noted that the 8500 runs an average of 24 to 44 percent faster than a similarly-clocked Intel Pentium chip, increasing to double on graphics and publishing tasks. The transition to PCI continued into 1996, with the introduction of the all-in-one 5400, desktop 6300/160 (usually sold as a Performa 6360), and mini-tower 6400 models. The success of the Macintosh clone market also prompted Apple to produce its own inexpensive machine using parts and production techniques that were common in both the clone market and the Wintel desktop market at the time. The Power Macintosh 4400 (sold as a 7220 in Asia and Australia) employed bent sheet metal instead of plastic for its case internals, and included a standard ATX power supply. 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