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	150ns 30 pin none 4 .256, 1 4MB no none none

Notes

The Macintosh Plus comes with 1MB installed via four 256k SIMMs. Using four 1MB SIMMs, a maximum of 4MB is possible. Remember to install the highest density SIMM in bank A first. When 1MB SIMMs are installed, the 256KBIT resistor must be clipped to enable recognition of the higher density SIMMs.