Specifications

Memory Portables - 14
PowerBook Duo
280/280c
The PowerBook Duo 280 and
280c have 4 MB of RAM
soldered on-board and are
expandable to 40 MB.
Note: Both units will support a maximum
of 40 MB of memory with use of a third-
party 36 MB memory card. A 24 MB card is
also supported.
Note: Apple supplies an 8 MB PSRAM
Expansion Card. Other sizes are available
from third-party vendors.
Memory Information
RAM Speed 70 ns
Soldered RAM 4 MB
Supported Sizes in MB 4, 6, 8, 10, 12,
16, 20, 24, 36
(see Note)
Maximum RAM 40 MB
Virtual Memory 1 GB
Soldered VRAM None
Number of VRAM Slots None
DRAM Configurations
4 MB The PowerBook Duo 280 and
280c have 4 MB of RAM
soldered on-board and one
expansion slot.
Up to
40 MB
Install a 4, 6, 8, 10, 12, 16,
20, 24 or 36 MB Expansion
Card.