Desktop Macintosh Computers: How Much Mass (Weight) Can They Support?

I would like to know how much mass (weight) I can place on top of my Macintosh. How heavy a monitor can the cases of desktop Macintosh computers support?
This article has been archived and is no longer updated by Apple.
Two issues usually dictate what you put on top of the computer: stability and ergonomics. For instance a tall, heavy monitor placed on a computer with a small footprint, such as a Macintosh IIci or Macintosh LC, would be less stable than the same monitor placed on a Macintosh II. Also, if the monitor is perched too high relative to the angle of sight, the issue of ergonomics may become a factor. The best approach is to experiment with different placements of a computer and monitor.
Macintosh Model
Max Supportable Mass
kg
pounds
Macintosh 630 Series
22.7
50.0
Macintosh Duo Dock
22.7
50.0
Macintosh Duo Dock II
38.6
85.0
Macintosh Duo Dock Plus
38.6
85.0
Macintosh II/IIx/IIfx
25.0
55.0
Macintosh IIcx/IIci
15.9
35.0
Macintosh IIsi
15.9
35.0
Macintosh IIvx/IIvi
22.7
50.0
Macintosh LC, LC II, LC III
22.7
50.0
Macintosh LC 475
15.9
35.0
Macintosh Performa 400 through 430
22.7
50.0
Macintosh Performa 450 through 476
15.9
35.0
Macintosh Performa 600/600CD
22.7
50.0
Macintosh Performa 630 Series
22.7
50.0
Macintosh Performa 6100 Series
22.7
50.0
Macintosh Performa 6200/6300 Series
22.7
50.0
Macintosh Quadra 605
15.9
35.0
Macintosh Quadra 610
22.7
50.0
Macintosh Quadra 650
22.7
50.0
Macintosh Quadra 660AV
22.7
50.0
Macintosh Quadra 700
15.9
35.0
Power Macintosh 4400
22.7
50.0
Power Macintosh 6100
22.7
50.0
Power Macintosh 7100
22.7
50.0
Power Macintosh 7200
31.8
70.0
Power Macintosh 7300
31.8
70.0
Power Macintosh 7500
31.8
70.0
Power Macintosh 7600
31.8
70.0
Power Macintosh G3 Desktop
31.8
70.0

NOTE: Tower and minitower computers--such as the Power Macintosh 9600, 8600, G3 Minitower and Performa 6400 and 6500 series computers--are not designed to support a monitor.
Monitor Model
Mass
kg
pounds
Apple AudioVision 14 Display
15.0
33.0
Apple Basic Color Monitor
11.5
25.3
Apple Color Plus 14-inch Display
11.5
25.3
Apple ColorSync 17-inch Display
22.2
49.0
Apple ColorSync 20-inch Display
30.6
67.4
Apple High Resolution Monochrome Display
7.7
17.0
Apple High Resolution RGB Display
15.4
34.0
Apple Multiple Scan 14 Display
13.2
29.0
Apple Multiple Scan 15 Display
14.1
31.0
Apple Multiple Scan 15AV Display
13.6
30.0
Apple Multiple Scan 17 Display
22.7
50.0
Apple Multiple Scan 20 Display
29.9
66.0
Apple Multiple Scan 720 Display
17.0
37.5
Apple Multiple Scan 1705 Display
20.5
45.2
Apple Studio Display 15" LCD (w/desktop stand)
5.4
12.0
Apple Studio Display 15" LCD (w/picture-frame stand)
3.5
7.7
Apple Two-Page Monochrome Monitor
27.2
60
AppleVision 750 Display
22.2
49.0
AppleVision 750AV Display
27.2
60.0
AppleVision 850 Display
30.6
67.4
AppleVision 850AV Display
35.4
78.0
AppleVision 1710 Display
22.2
49.0
AppleVision 1710AV Display
27.2
60.0
Macintosh 12-inch Monochrome Display
7.3
16.0
Macintosh 12-inch RGB Display
10.9
24.0
Macintosh 16-inch Color Display
21.3
47.0
Macintosh 21-inch Color Display
36.1
79.6
Macintosh Color Display
11.3
25.0
Macintosh Portrait Display
15.9
35.0
Performa Display
11.3
25.0
Performa Plus Display
11.3
25.0
Studio 17 CRT
20.8
45.9
Studio 21 CRT
35
77
Last Modified: Feb 18, 2012

Additional Product Support Information