Macintosh LC 575


Performa 575

Performa 576

Performa 577

Performa 578


Family: Macintosh LC

Codename: Optimus

Gestalt ID: 92

Minimum OS: 7.1

Maximum OS: 8.1

Introduced: February 1994

Terminated: April 1995


CPU: Motorola MC68LC040

CPU Speed: 33 MHz

FPU: available via 68040 upgrade

Bus Speed: 33 MHz

Register Width: 32-bit

Data Bus Width: 32-bit

Address Bus Width: 32-bit

Level 1 Cache: 4 kB data, 4 kB instruction


RAM Type: 72 pin SIMM

Minimum RAM Speed: 80 ns

Onboard RAM: 4 MB

RAM slots: 1

Maximum RAM: 36 MB

Expansion Slots: 1 LC PDS, comm


Monitor: 14" CRT (built-in)

VRAM: 512 kB-1 MB (2 sockets)

Max Resolution: 640x480


Hard Drive: 160-320 MB

Floppy Drive: 1.4 MB SuperDrive

Optical Drive: 2x CD-ROM


ADB: 1

Serial: 2 Mini DIN-8


Audio Out: stereo 8 bit mini

Audio In: mono 8 bit mini

Speaker: mono

Microphone: mono


Power: 40 Watts

Dimensions: 17.9" H x 13.5" W x 16.5" D

Weight: 40.5 lbs.

Released in February 1994, the LC 575 was released alongside the LC 550, adding a 33 MHz 68LC040 processor. It was also the first Mac to contain a specialized "comm slot" that could take various network and modem cards specially designed to fit the slot. the comm slot has been a performa standard ever since. It sold for $1,700 and was also released as the Performas 575, 576, 577 and 578.

Picture Credits:
Todo Apple Blog