he LC 575 (a.k.a. Performa 575, 577, and 578) is essentially a Quadra 605 motherboard in an LC 520/550 case.

It normally shipped with 5 MB RAM and a CD-ROM drive, but there was an LC 575 in a 4 MB configuration without a CD-ROM drive – available only in the education market.

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Details

• LC 575 introduced 1994.11.03 at $1,700; discontinued 1996.03.02
• Performa 575-578 introduced 1994.02.01 at $1,700; discontinued 1995.04
• requires System 7.1 (with Enabler 065) or later; highest version supported without a PPC upgrade is Mac OS 8.1.
• CPU: 33 MHz 68LC040
• FPU: requires replacing CPU with 68040
• Performance: 10.0 (relative to SE); 8.85, MacBench 2.0 CPU; 29 MIPS
• ROM: 1 MB
• RAM: 4 MB on motherboard, expandable to 68 MB using a single 80ns 72-pin SIMM; can use 1 MB, 2 MB, 4 MB, 8 MB, 16 MB, 32 MB and 64 MB SIMMs. (The LC 575 works only with single-banked 64 MB SIMMs, but it does not work with double-banked 64 MB RAM SIMMs.
• video: 512 KB VRAM, expandable to 1 MB; supports 640 x 480 resolution
• L2 cache: optional, PDS
• Hard drive: 160-320 MB SCSI
• ADB: 2 ports for keyboard and mouse
• serial: 2 DIN-8 RS-422 ports on back of computer
• SCSI: DB-25 connector on back of computer
• Hard drive: 250 MB
• one LC PDS slot
• size (HxWxD): 17.9″ x 13.5″ x 16.5″
• Weight: 40.5 lb.
• PRAM battery: 4.5V alkaline
• Gestalt ID: 92
• addressing: 32-bit
• upgrade path: Power Mac PDS card

Accelerators & Upgrades

• PowerPC Processor Upgrades for LC PDS, Covers Apple, DayStar, and Sonnet PPC upgrades for LC 475, 575-580, 630, Performa 475-476, 575-588, 630 series, Quadra 605, and Quadra 630.
• L2 cache, various vendors, discontinued

Online Resources

• See: Online resources and links for the Mac LC 575 (Performa 575)

Cautions

• Serial port normally restricted to 57.6 kbps; throughput with a 56k modem may be limited. See 56k modem page. For more information on Mac serial ports, read Macintosh Serial Throughput.

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