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	{{Infobox computer		{{Infobox computer
	\| name = Macintosh LC II		\| name = Macintosh LC II
			\| image = [[File:Macintosh LC II.jpg\|250px]]
			\| caption = Macintosh LC II
	\| manufacturer = Apple Computer, Inc.		\| manufacturer = Apple Computer, Inc.
	\| type = Personal Computer		\| type = Personal Computer

Josh: Create Macintosh LC II article

2026-02-09T16:45:21Z

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{{Infobox computer
| name = Macintosh LC II
| manufacturer = Apple Computer, Inc.
| type = Personal Computer
| release_date = March 23, 1992
| discontinued = March 15, 1993
| price = US$1,699
| cpu = Motorola 68030 @ 16 MHz
| memory = 4 MB RAM (expandable to 10 MB)
| storage = 40 MB, 80 MB, or 160 MB SCSI HDD, 1.44 MB SuperDrive
| display = 512×384 (8-bit) or 640×480 (8-bit with 512K VRAM)
| sound = 8-bit stereo input/output
| dimensions = 2.9" H × 12.2" W × 15.3" D
| weight = 8.8 lbs (4.0 kg)
| os = System 6.0.8 – System 7.6.1
| predecessor = [[Macintosh LC]]
| successor = [[Macintosh LC III]]
| codename = Foster Farms
| model = M1700
}}
The '''Macintosh LC II''' is a personal computer released by Apple on March 23, 1992, as a direct replacement for the original [[Macintosh LC]].<ref>{{cite web |url=https://www.apple-history.com/lc_ii |title=Macintosh LC II |publisher=Apple History |access-date=2026-02-09}}</ref> The LC II upgraded the processor to a Motorola 68030, adding a PMMU (Paged Memory Management Unit) for virtual memory support while maintaining price parity with the original LC's launch price.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_lc/specs/mac_lc_ii.html |title=Apple Macintosh LC II Specs |publisher=EveryMac.com |access-date=2026-02-09}}</ref>

== Model Variants ==

The LC II was sold under several Performa brand names for consumer markets:

* '''Performa 400''' — Base configuration
* '''Performa 405''' — With 4 MB RAM and 80 MB hard drive
* '''Performa 410''' — With 4 MB RAM and 80 MB hard drive (different bundle)
* '''Performa 430''' — With 4 MB RAM and 120 MB hard drive

All variants use the same logic board and hardware.

== Architecture and Processor ==

The LC II uses a Motorola 68030 processor running at 16 MHz. Despite the upgraded processor, the LC II retains the 16-bit memory bus from the original LC, which limits memory bandwidth.<ref>{{cite web |url=https://lowendmac.com/1992/macintosh-lc-ii/ |title=Macintosh LC II |publisher=Low End Mac |access-date=2026-02-09}}</ref> The 68030 includes an integrated PMMU, enabling System 7's virtual memory feature.

The Gestalt ID for the Macintosh LC II is 19 or 37 (depending on ROM version).

'''Note:''' Although the 68030 supports an FPU, Apple did not include an FPU socket on the LC II logic board as a cost-saving measure.

== Memory and Storage ==

=== RAM Configuration ===

The LC II shipped with 4 MB of RAM standard, expandable to 10 MB. Memory expansion uses two 30-pin SIMM slots populated in pairs with matching 100ns or faster SIMMs.

{| class="wikitable"
|+ '''RAM Configurations'''
|-
! Configuration !! Slot 1 !! Slot 2
|-
| 4 MB || 2 MB || 2 MB
|-
| 6 MB || 2 MB + 2 MB soldered || 2 MB
|-
| 10 MB || 4 MB || 4 MB + 2 MB soldered
|}

=== Video RAM ===

The LC II includes 256 KB of VRAM standard, expandable to 512 KB:

* 256 KB VRAM: 640×480 at 4-bit (16 colors)
* 512 KB VRAM: 640×480 at 8-bit (256 colors)

=== Storage Systems ===

Storage options included:
* 40 MB, 80 MB, or 160 MB internal SCSI hard drive
* 1.44 MB SuperDrive (reads/writes 400K, 800K, and 1.44 MB disks)

== Input/Output and Expansion ==

=== Port Configuration ===

* 1× Apple Desktop Bus (ADB) port
* 1× External SCSI (DB-25)
* 1× Audio input (3.5mm stereo minijack)
* 1× Audio output (3.5mm stereo minijack)
* 2× Serial ports (Mini DIN-8)
* 1× Video output (DA-15)

=== Expansion ===

The LC II features a single LC Processor Direct Slot (LC PDS), compatible with the same expansion cards as the original LC.

== General Maintenance ==

For detailed maintenance practices including cleaning, PRAM battery management, and connector care, refer to the dedicated [[Macintosh LC II General Maintenance]] page.

== Troubleshooting ==

A comprehensive troubleshooting guide addressing common issues with the Macintosh LC II is available on the [[Macintosh LC II Troubleshooting]] page.

== Capacitor Replacement ==

The Macintosh LC II logic board contains 17 surface-mount electrolytic capacitors that commonly fail due to age. Detailed replacement guidelines can be found on the [[Macintosh LC II Capacitor Replacement Guide]] page.

== Technical Details ==

{| class="wikitable" style="width:70%; text-align:center;"
|+ '''Macintosh LC II Technical Specifications'''
|-
! Component !! Specification
|-
| '''CPU''' || Motorola 68030 @ 16 MHz
|-
| '''FPU''' || None (no socket provided)
|-
| '''PMMU''' || Integrated in 68030
|-
| '''Data Bus''' || 32-bit (16-bit memory controller)
|-
| '''System Bus''' || 16 MHz
|-
| '''ROM''' || 512 KB
|-
| '''RAM''' || 4 MB (max 10 MB)
|-
| '''VRAM''' || 256 KB (max 512 KB)
|}

== References ==
<references />

[[Category:Apple Vintage Computers]]

Macintosh LC II - Revision history

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