personal computer by Apple

The LC 580 (a.k.a. Performa 580 and 588) is essentially an LC 575 with a new logic board that supports an IDE hard drive (instead of the more expensive SCSI hard drive used in earlier 500 series Macs ) and uses a less expensive monitor.

It also has a video I/O slot that can accept the original TV tuner card Apple created for the Performa series.

Specs (via Low End Mac)

• Cpu: 33 MHz 68LC040
• Fpu: requires replacing CPU with 68040
• Performance: 10.0 (relative to SE); 29 MIPS
• Ram: 4 MB on motherboard, expandable to 52 MB using a two 80ns 72-pin SIMM; first slot can accept 1 MB, 2 MB, 4 MB, 8 MB, 16 MB, or 32 MB SIMM; second slot can accept only 1 MB, 4 MB, or 16 MB SIMM
• Rom: 1 MB
• L2 Cache: optional, PDS
• Hard Drive: 500 MB IDE
• Video: 1 MB VRAM; supports 640 x 480 at 16-bits
• Addressing: 32-bit
• Gestalt Id: 99
• Upgrade Path: Power Mac PDS card
• Adb: 2 ports for keyboard and mouse
• Scsi: DB-25 connector on back of computer
• Serial: 2 DIN-8 RS-422 ports on back of computer
• Pram Battery: 4.5V alkaline
• Weight: 40.5 lb.
• Internal Hd Format: Cannot See IDE Drives (Apple Knowledge Base 18360) notes that due to changes in the way modern IDE drives are formatted at the factory, early versions of Apple HD SC Setup (ones that come with System 7.5.1 and earlier) will not recognize them. You should boot System 7.5.2 or later and use Drive Setup 1.0.3 or higher with these drives.
• See: Online resources and links for the Mac LC 580 (Performa 580)