This may be considered an authoritative technical specification for the Macintosh Colo(u)r Classic II and Performa 275 computers. Please report any errors to Chris Lawson.

Physical / Marketing Specs

Introduced:21 October 1993
Discontinued:01 September 1994
Form Factor:Color Classic
Weight (lbs):22.5
Dimensions (inches):14.5 H x 9.9 W x 12.6 D
Original Retail Price:US$1500
Also Sold As:Performa 275
Notes:Not sold in the U.S.
  

Electrical Specs

Max Watts:100
Amps:0.83
BTU/hr:342
AC Power:90-240 V, 47-63 Hz
Soft Power:supported

Logic Board Specs

Processor:Motorola 68030, 33 MHz
PMMU:integrated
FPU:68882 (optional)
Data Path:32-bit, 33 MHz
L1 Cache:0.5 KB
L2 Cache:none
Slots:1, LC PDS, 32-bit
Gestalt ID:83
PRAM Battery:3.6 V, 1/2-AA lithium
Notes:Some later boards used a 4.5 V Rayovac 841 alkaline battery.
  

External Ports

ADB:2
SCSI:DB-25
Serial:2 mini-DIN8, RS-422
Microphone:Omni
Headphones:1/8" stereo

RAM Specs

On-board:4 MB
RAM Slots:1, 72-pin SIMM
Min - Max RAM:4 MB - 68 MB
Min RAM Speed:80 ns
RAM Sizes:1, 2, 4, 8, 16, 32, 64 MB

Video Specs

Display:10" Trinitron
Resolution (H x V):512 x 384 @ 8-bit
On-board VRAM:256 KB
VRAM Slots:1, 68-pin SIMM
Min - Max VRAM:256 KB - 512 KB
Min VRAM Speed:80 ns
VRAM Sizes:256 KB
Max Bit Depth:16-bit (w/256 KB SIMM)
  

Audio Specs

Audio-in:8-bit mono
Audio-out:8-bit stereo
Internal Speakers:1, 16-Ohm

Storage Specs

Floppy:1.44 MB Superdrive, auto-inject
Original HD Size:80-160 MB
Internal HD Interface:SCSI

Software Specs

Addressing Modes:24-, 32-bit
Original System Software:7.1 Japanese
Original Enabler:403
ROM ID:$067C
ROM Version:$24
ROM Size:1MB
AppleTalk Version:57.0.4
Compatible Mac OS:7.1
7.5
7.5.1
7.5.3
7.5.5
7.6
7.6.1
8.0
8.1
Notes:Mac OS 8.x requires some hacking