Memory Information
	RAM Speed SIMM type On Board RAM Number of SIMM Slots Supported sizes in MB Maximum RAM Virtual Memory On Board VRAM Number of VRAM slots	120ns 30 pin none 8 .256, 1, 4, 16 128MB* 1GB none none

Notes

The Macintosh II/IIx originally shipped in a number of configurations. Both systems require PAL type SIMMs in densities higher than 1MB, verify with your memory vendor that the SIMMs are compatible with the II/IIx. The Mac II requires the FDHD Upgrade Kit, M6051/C, to utilize SIMMs larger than 1MB. *If 4MB SIMMs are used in a Mac II, they cannot be installed in Bank A thus limiting maximum RAM in the Mac II to 20MB.

32-BIT Information

The ROMs in this system are not 32-bit-clean, but with the 32-Bit System Enabler under System 7.1 or MODE32 with versions of System 7 prior to 7.1, they can run in 32-bit mode and can take advantage of more than 8MB of physical RAM. A PMMU is required in the Mac II when using the Apple 32 bit Enabler.