Macintosh II
The Macintosh II was released on March 2, 1987.
It has a Motorola 68020 CPU at 16MHz with a Motorola 68881 Floating Point Unit.
It also has 256KB of ROM and 1 or 4MB of RAM, which is expandable to 128KB.
It is compatible with up to 6 displays with a 512 by 384 Pixel Resolution.
Macintosh IIx
The Macintosh IIx was released on September 19, 1988.
It has a Motorola 68030 CPU at 16MHz with a Motorola 68882 Floating Point Unit.
It also has 256KB of ROM, and 1 or 4MB of RAM, which is expandable to 182MB.
It is compatible with up to 6 displays with a 640 by 480 Pixel Resolution.
Macintosh IIcx
The Macintosh IIcx was released on March 7, 1989.
It has a Motorola 68030 CPU at 16MHz with a Motorola 68882 Floating Point Unit.
It also has 256KB of ROM, and 1 or 4MB of RAM, which is expandable to 128MB.
It is compatible with up to 3 displays with a 640 by 480 Pixel Resolution.
Macintosh IIcI
The Macintosh IIcI was released on September 20, 1989.
It has a Motorola 68030 CPU at 25 MHz with a Motorola 68882 Floating Point Unit.
It also has 512KB of ROM, and 1 or 4MB of RAM, which is expandable to 128MB.
It is compatible with only one display at a 640 by 480 Pixel Resolution.
Macintosh IIfx
The Macintosh IIfx was released on March 19, 1990.
It has a Motorola 68030 CPU at 40MHz with a Motorola 68882 Floating Point Unit.
It also has 512KB of ROM, and 4MB of RAm, which is expandable to 128MB.
It is compatible with up to 6 displays at 640 by 480 Pixel Resolution.
Macintosh IIsI
The Macintosh IIsI was released on October 15, 1990.
It has a Motorola 68030 CPU at 20MHz with a optional Motorola 68882 Floating Point Unit.
It also has 512KB of ROM, and 2, 3, or 5MB RAM, which is all expandable to 65MB.
It is compatible with only one display at 640 by 480 Pixel Resolution.
Macintosh IIvI
The Macintosh IIvI was released on October 19, 1990. It has a Motorola 68030 CPU at 16MHz with a Motorola 68882 Floating Point Unit. It also has 1MB of ROM, and 4MB of RAM, which is expandable to 68MB. It is compatible with only one display, at 640 by 480 Pixel Resolution.
Macintosh IIvx
The Macintosh IIvx was released on October 19, 1992, along with the Macintosh IIvI. It has a Motorola 68030 CPU at 32MHz with a Motorola 68882 Floating Point Unit. It also has 1Mb of ROM, with 4 or 5MB of RAM. It is compatible with only one display, at 640 by 480 Pixel Resolution.