Macintosh Performa 550

The Macintosh Performa 550 is a version of the LC 550 that was rebranded by Apple Computer for the consumer market in Japan. It was sold as part of Apple's Performa line from October 18, 1993 until April 1, 1996.

Features
The Performa 550 was an all-in-one desktop Macintosh with a built-in 14" display from Sony. It contained 512 KB of VRAM that could support up to 8-bit color at a resolution of 640 x 480 pixels; upgrading the VRAM to 768 KB would allow it to support up to 16-bit color. The logic board was comparable to (though not interchangable with) a Macintosh LC III+ with a 33 MHz 68030 processor and a 32-bit LC PDS slot. One 72-pin  slot allowed RAM to be upgraded from the base 4 MB soldered onto the motherboard, to a maximum of 36 MB. Hard drives were connected through a SCSI bus. The built-in floppy drive supported 1.44 MB high-density disks.

The Performa 550 came with System 7.1P3 pre-installed along with System Enabler 332 and a home software bundle. The last operating system that it supported was Mac OS 7.6.1.

Variants
The Macintosh Performa 560, which shipped on January 1, 1994, was identical to the 550 except that it came with System 7.1P5 pre-installed along with System Enabler 332 and a business software bundle.