Memory Information
	RAM Speed On Board RAM Supported sizes in MB Maximum RAM Virtual Memory On Board VRAM Number of VRAM slots	70ns 4MB 4,6,8,10, 12,16,20, 24,36* 40MB* 1GB None None

Notes

The PowerBook Duo 280 and 280c have 4MB soldered on-board and one expansion slot. *Both units will support a maximum of 40MB of memory with the use of a third party 36MB memory card. A 24MB card is also supported.

32-Bit Information

This system has 32-bit-clean ROMs allowing it to take advantage of more than 8MB of physical RAM under System 7 by enabling 32 bit addressing in the Memory Control Panel.