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Verify against Apple's Macintosh Performa 400 Series Service Source (hosted): corrected case dimensions to Apple's 3.0 x 12.2 x 15.0 in; recorded that Apple documents this machine (the LC III+ under a consumer name) in the Performa 400 Series volume with 1 MB of ROM, 512K VRAM upgradable to 768K and a 114-pin PDS; added Apple's electrical, sound, microphone and battery figures and the fact that the volume has no Adjustments chapter
Rewrite from Performa 400 Series SS, Apple tech specs 112332 and LC III Developer Note: floppy conflict (SS manual-insert vs auto) stated, VRAM rules, FPU socket, C22 fault; case-design claim now attributed to EveryMac; Performa 460 photo in place of LC III; remove self-referential notes
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{{Infobox computer
{{Infobox computer
| name        = Macintosh Performa 460
| name        = Macintosh Performa 460
| image        = [[File:Macintosh LC III.jpg]]
| image        = [[File:Macintosh Performa 460 (photo).jpg|260px|frameless]]
| caption      = Macintosh Performa 460
| caption      = Macintosh Performa 460. Photo: All About Apple museum, Wikimedia Commons, CC BY-SA 3.0
| manufacturer = Apple Computer, Inc.
| manufacturer = Apple Computer, Inc.
| type        = Personal Computer
| type        = Desktop personal computer
| release date = October 18, 1993
| release_date = October 18, 1993
| discontinued = November 1, 1993
| discontinued = November 1, 1993 (EveryMac)
| price        = US$1,300
| price        = US$1,300 (EveryMac)
| cpu          = Motorola 68030 @ 33 MHz
| cpu          = Motorola 68030 at 33 MHz; PLCC socket for a 68882 FPU
| memory      = 4 MB RAM (expandable to 36 MB)
| memory      = 4 MB on board, one 72-pin SIMM socket, 36 MB maximum
| storage      = 80 MB SCSI hard drive, 1.44 MB floppy
| rom          = 1 MB
| display      = 512x384-832x624 (up to 16-bit)
| storage      = 80 MB SCSI hard drive; 1.4 MB SuperDrive
| sound        = Monaural 8-bit in and out (Apple's figure)
| display      = External; 512 KB VRAM on board, 768 KB with a VRAM SIMM
| dimensions  = 3.0" H × 12.2" W × 15.0" D (7.7 × 31.0 × 38.2 cm)
| sound        = 8-bit mono
| weight      = 8.8 lbs (4 kg)
| dimensions  = 7.7 × 31.0 × 38.2 cm (3.0 × 12.2 × 15.0 in)
| os          = System 7.1P - 7.6.1
| weight      = 4.0 kg (8.8 lb)
| predecessor  = [[Macintosh Performa 450|Performa 450]]
| os          = System 7.1P3 – Mac OS 7.6.1
| successor    = [[Macintosh Performa 475|Performa 475]]
| codename    =
| model        = M1254
| model        = M1254
}}
}}
The '''Macintosh Performa 460''' is a consumer-oriented personal computer introduced by Apple Computer on October 18, 1993.<ref>{{cite web |url=https://everymac.com/systems/apple/mac_performa/specs/mac_performa_460.html |title=Macintosh Performa 460 Specs |publisher=EveryMac.com |access-date=2026-02-10}}</ref> It is a rebrand of the [[Macintosh LC III+|LC III+]] for the consumer market. The Performa 460 featured a sleeker case design compared to the earlier Performa 400-series models, with a smooth curved front and rounded "foot" design.
The '''Macintosh Performa 460''' is a desktop Macintosh sold by Apple through consumer retail shops. It is the [[Macintosh LC III+]] under a Performa name: a 33 MHz version of the [[Macintosh LC III]].<ref name="em">EveryMac, [https://everymac.com/systems/apple/mac_performa/specs/mac_performa_460.html "Macintosh Performa 460 Specs"].</ref><ref name="ss4">Apple Computer, ''Service Source: Macintosh Performa 400 Series'' (1995), [[:File:Performa 400 series.pdf]]; see [[Macintosh Performa 400 Series Service Source]]. Page numbers are PDF pages.</ref> The [[Macintosh Performa 466|Performa 466]] and [[Macintosh Performa 467|467]] are the same machine with a 160 MB hard drive and the Performa Display Plus.<ref name="ss4" /> Low End Mac records that the 460 replaced the [[Macintosh Performa 450|Performa 450]] in October 1993.<ref name="lem-perf">Low End Mac, [https://lowendmac.com/2015/apples-performa-line-1992-to-1997/ "Apple's Performa Line, 1992 to 1997"].</ref> EveryMac describes a new case for the 460, with a curved front, a more rounded foot and finger indentations above and below the floppy slot; the dimensions Apple gives are unchanged.<ref name="em" /><ref name="ss4" />


The Performa 460 uses a Motorola 68030 processor running at 33 MHz with a 32-bit data path. It shipped with 4 MB of RAM (expandable to 36 MB using a single 72-pin SIMM), 512 KB of VRAM (expandable to 768 KB), and an 80 MB SCSI hard drive. An optional 68882 FPU could be installed.
Apple gives the introduction date as October 18, 1993, with System 7.1P3 and System Enabler 308 as the original system software.<ref name="apple">Apple, [https://support.apple.com/en-us/112332 "Macintosh Performa 460: Technical Specifications"].</ref> EveryMac gives a US price of US$1,300, discontinuation on November 1, 1993, order number M2156LL/A and model number M1254.<ref name="em" />


== Specifications ==
== Specifications ==
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<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:90%; text-align:center;"
{| class="wikitable styled-table" style="width:90%;"
! Component !! Specification
|+ '''Apple's figures'''
! Item !! Figure
|-
|-
| '''CPU''' || Motorola 68030 @ 33 MHz (32-bit data path)
| Processor || Motorola 68030 at 33 MHz; 32-bit data bus; coprocessor socket
|-
|-
| '''FPU''' || Optional 68882
| RAM || 4 MB on board; one 72-pin SIMM socket for 1, 2, 4, 8, 16 or 32 MB SIMMs of 80 ns or faster; 36 MB maximum
|-
|-
| '''System Bus''' || 33 MHz
| ROM || 1 MB
|-
|-
| '''ROM''' || 1 MB
| VRAM || 512 KB on the board; one VRAM SIMM socket takes a 256K SIMM for 768 KB
|-
|-
| '''RAM''' || 4 MB onboard (expandable to 36 MB via 72-pin SIMM)
| Floppy drive || Apple SuperDrive, 1.4 MB: manual-insert (''Service Source''), auto-inject (technical specifications)
|-
|-
| '''VRAM''' || 512 KB onboard (expandable to 768 KB)
| Hard drive at introduction || 80 MB SCSI
|-
|-
| '''Storage''' || 80 MB SCSI hard drive, 1.44 MB floppy
| Bundled monitor || Performa Display
|-
|-
| '''Expansion''' || 1x LC III PDS slot
| Ports || One ADB, two serial (printer and modem, mini DIN-8), SCSI DB-25, DB-15 video, sound in and out
|-
|-
| '''Ports''' || ADB, SCSI, 2x Serial (Modem/Printer), Audio out
| Expansion || One 114-pin processor-direct slot for 020/030 cards
|-
|-
| '''Display''' || Up to 832x624 @ 8-bit (512 KB), 832x624 @ 16-bit (768 KB)
| Electrical || 100–240 VAC, 47–63 Hz, automatically configured; 50 W maximum (technical specifications)
|-
|-
| '''Power''' || 100V-240V AC, 50 W max
| Size and weight || 3.0 × 12.2 × 15.0 in (7.7 × 31.0 × 38.2 cm); 8.8 lb (4.0 kg)
|}
|}
Sources: Apple's technical specifications, the ''Performa 400 Series Service Source'', pp. 3–15, and the ''Macintosh LC III Developer Note'', p. 2.<ref name="apple" /><ref name="ss4" /><ref name="dn">Apple Computer, ''Macintosh LC III Developer Note'' (1993), p. 2, [[:File:Macintosh LC III Developer Note.pdf]]; see [[Macintosh LC III Developer Note]]. The note describes the 25 MHz LC III.</ref> The ''Service Source'' prints no maximum-power figure for the 460, 466 and 467.


== Relationship to LC III+ ==
The coprocessor socket is a PLCC socket for a 68882; no FPU is fitted as standard.<ref name="apple" /><ref name="dn" /> With the on-board 512 KB of VRAM the machine shows 256 colours at 640 × 480 and 832 × 624; with 768 KB it shows thousands. A 512K VRAM SIMM fits the socket, but only 256K of it is used.<ref name="apple" /> The processor-direct slot has a power budget of 4 W.<ref name="dn" />
 
The Performa 460 is identical to the [[Macintosh LC III+|LC III+]] internally. The Performa line was marketed to home consumers through retail channels, while the LC III+ was sold to educational institutions.
 
== General Maintenance ==


For detailed maintenance procedures including cleaning, PRAM battery management, and connector maintenance, refer to the [[Macintosh LC III General Maintenance]] page (the LC III and LC III+ share the same maintenance procedures).
The PRAM battery is a 3.6&nbsp;V lithium cell, Apple part 742-0011; Apple says to replace it below 3.0&nbsp;V. The power supply is part 661-1733, shared with the whole LC family.<ref name="apple" /><ref name="ss4" />


== Troubleshooting ==
== Known faults ==
* Leaking surface-mount electrolytic capacitors on the logic board and in the power supply. The board list is on [[Macintosh LC III+ Capacitor Replacement Guide]].
* C22 on the LC III logic board, the 47&nbsp;µF capacitor on the −5&nbsp;V rail, is printed and fitted the wrong way round at the factory. Doug Brown's article treats the Performa 460, 466 and 467 as the same design. Serial-port faults after a recap point there.<ref name="ddb">Doug Brown, [https://www.downtowndougbrown.com/2024/11/the-capacitor-that-apple-soldered-incorrectly-at-the-factory/ "The capacitor that Apple soldered incorrectly at the factory"], 26 November 2024.</ref>
* A flat PRAM battery: Apple's charts for this family put "Check batteries" first for "No video" and in the no-power entries.<ref name="ss4" />


A troubleshooting guide addressing common issues is available on the [[Macintosh LC III Troubleshooting]] page.
See [[Macintosh Performa 460 Troubleshooting]], which applies to all three models, and [[Macintosh LC III+ Troubleshooting]].


== Capacitor Replacement Guide ==
== Service documentation ==
 
Apple covers the Performa 460 in the ''Macintosh Performa 400 Series Service Source''. The ''Macintosh LC III Developer Note'' describes the hardware.<ref name="ss4" /><ref name="dn" />
Capacitor replacement information for the logic board can be found on the [[Macintosh LC III Capacitor Replacement Guide]] page.
 
== Service Documentation ==
 
The official Apple Service Source documentation for this model:


<pdf width="800" height="500">File:Performa_400_series.pdf</pdf>
<pdf width="800" height="500">File:Performa_400_series.pdf</pdf>


== See Also ==
== Related pages ==
 
* [[Macintosh LC III+]]
* [[Macintosh LC III+]]
* [[Macintosh Performa 450]]
* [[Macintosh Performa 460 Troubleshooting]]
* [[Macintosh LC III+ General Maintenance]]
* [[Macintosh LC III+ Capacitor Replacement Guide]]
* [[Macintosh Performa 466]]
* [[Macintosh Performa 466]]
* [[Macintosh Performa 467]]
* [[Macintosh Performa 467]]
== Apple's own figures ==
'''This machine is the Macintosh LC III+ under a consumer name''', and Apple documents it here rather than in the LC Series volume: 68030 at 33 MHz, 32-bit internal data bus, burst-mode RAM access, coprocessor socket, 4 MB standard expandable to 36 MB in 80 ns or faster SIMMs, 1 MB of ROM, 512K VRAM upgradable to 768K, and a 114-pin processor-direct slot for 020/030 cards.<ref name="ssp400" />
From the '''Macintosh Performa 400 Series Service Source''', which covers the 400, 405, 410, 430, 450, 460, 466, 467, 475 and 476 together:<ref name="ssp400">Apple Computer, ''Macintosh Performa 400 Series Service Source'' ([[Macintosh Performa 400 Series Service Source]], [[:File:Performa_400_series.pdf]]), Specifications chapter and Additional Procedures, Battery Replacement (below 3.0 volts, replace the battery). This volume has no Adjustments chapter, so Apple publishes no rail tolerance and no power-supply adjustment for these machines.</ref>
* '''Line voltage''' 100–240 VAC, automatically configured; '''frequency''' 50–60 Hz
* '''Maximum power''' — Apple prints only three figures for the whole family: '''Performa 400: 50 W'''; '''Performa 450: 30 W'''; '''Performa 475/476: 26 W''', none including the monitor
* '''Dimensions''' 3.0 in (7.7 cm) H × 12.2 in (31.0 cm) W × 15.0 in (38.2 cm) D; '''weight''' 8.8 lb (4.0 kg) — one case for the whole family
* '''Sound''' monaural 8-bit input at 11 or 22 kHz; monophonic 8-bit generator feeding the same signal to both channels of stereo equipment. The '''Performa 475 and 476 alone''' have a mono input and a '''stereo output'''
* '''Microphone''' electret, omnidirectional, running on '''8 V DC supplied by the microphone port'''
* '''PRAM battery''' 3.6 V ½AA lithium; Apple: '''replace below 3.0 V'''. Neutralise lithium leakage with bicarbonate of soda, not vinegar
'''Apple publishes no rail tolerance and no power-supply adjustment for any of these machines''' — the volume has no Adjustments chapter. The "+5 V 4.85–5.15 V / +12 V 11.90–12.75 V" pair that circulates on this wiki is Apple's Macintosh Plus and 128K/512K procedure, measured at the external drive port with voltage test cable 077-0135.


== References ==
== References ==
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[[Category:Apple Vintage Computers]]
[[Category:Apple Vintage Computers]]
[[Category:Macintosh Performa]]
[[Category:Macintosh Performa]]
{{Navbox-AppleVintage|state=collapsed}}
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