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SHEEPSHAVER NOT ENOUGH MEMORY ZERO K NEEDED UPGRADE

Neither is the power key, which existed on all Apple ADB keyboards and the first-generation USB keyboard. Those used to newer Macs will find several keys missing from the keyboard: Esc and Ctrl, along with the Cmd and Option keys to the right of the space bar are simply not there. Because the Mac Plus is convection cooled, you should never block the vents on the side or top of the computer. Until the air cooled iMacs came out, all desktop Macs following the Plus and 512Ke up until the slot-loading iMacs have included a fan to reduce internal heat. The Mac Plus was bundled with MacWrite and MacPaint, and Apple began to bundle HyperCard and MultiFinder in August 1987. There are persistent rumors that the power supply in the beige Plus was less reliable and more prone to failure with 4 MB configurations, a problem addressed with an improved power supply in the “platinum” Plus.

The original Plus came in Apple beige during 1987 the case color was changed to platinum, the same color used for almost all post-1986 desktop Macs until the iMac arrived in 1998 (there were a couple black Macs). The Plus does not support high density floppies, but it can be used with an external high density floppy drive as long as the disks used are 800K floppies. The SCSI bus on the Mac Plus is officially rated at 1.25 MBps/10 Mbps by Apple, although real world testing shows it to be barely over 0.26 MBps/2.1 Mbps – which is still 4x the speed of Apple’s earlier floppy port hard drive.

SHEEPSHAVER NOT ENOUGH MEMORY ZERO K NEEDED UPGRADE

Not only was 1 MB more RAM than PC-class machines could handle, but the Plus could be expanded to 4 MB total RAM! (Earlier Macs came with a fixed amount of memory with no upgrade path.)

Introduced in January 1986, two years after the original Macintosh, the Mac Plus shipped with 1 MB of RAM, a new double-sided 800 KB floppy drive, and a built-in SCSI port (the first Mac so equipped).

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