Editing Macintosh LC 520 (section)

=== System Architecture ===
{| class="wikitable styled-table" style="width:90%; text-align:center;"
! Sub-system !! Specification (Macintosh LC 520, June 1993)
|-
| '''CPU''' || Motorola 68030 @ 25 MHz • 32-bit data bus • 24-bit address (16 MB space)
|-
| '''Bus width''' || 32-bit data • 24-bit address • Full 68030 performance (unlike LC/LC II)
|-
| '''ROM''' || 1 MB ROM (2 × 256K × 16-bit chips) • QuickDraw, ADB, SCSI Manager
|-
| '''RAM''' || 4 MB on-board + 1 MB SIMM standard • '''expandable to 36 MB''' (72-pin SIMM)
|-
| '''Video''' || 512 KB VRAM standard • 640 × 480 at 8-bit color • expandable to 768 KB VRAM
|-
| '''Sound''' || Stereo speakers • Built-in microphone • 8-bit 22.254 kHz sampling
|-
| '''Storage''' || 80 or 160 MB SCSI hard drive • 2× CD-ROM (caddy-loading, 300 KB/s)
|-
| '''I/O Ports''' || ADB × 2 • Mini-DIN-8 serial × 2 • DB-25 SCSI • 3.5mm audio in/out
|-
| '''Expansion''' || Enhanced LC PDS – 114-pin connector, backward compatible with 96-pin cards
|}