powerbook 540ppc
Minimum OS: 7.1.1
Maximum OS: 8.1
Introduced: May 1994
Terminated: August 1995
Processor
CPU: Motorola PPC
CPU Speed: 100 MHz
FPU: none
Bus Speed: 33 MHz
Register Width: 32-bit
Data Bus Width: 32-bit
Address Bus Width: 32-bit
Level 1 Cache: 4 kB data, 4 kB instruction
ROM: 2 MB
RAM Type: unique
Min RAM Speed: 70 ns
Onboard RAM: 4 MB
RAM slots: 1
Maximum RAM: 36 MB
Expansion Slots: modem, optional type II/III PC Card bay
Video
Screen: 9.5" active-matrix
Max Resolution: 16 bit 640x480
Video Out: 8 bit 832x624 (mirror only)
Storage
Hard Drive: 240-500 MB
Floppy Drive: 1.4 MB SuperDrive
powerbook 540c ppc
The powerbook series to use a motorola 68LC040 cpu (simultaneous with duo 280) and be upgradeable to the powepc architecture via a swap out cpu daughter card (with the powerpc and 68040 upgrades for sale), use 9.5" dual scan passive color/b&w displays, 16bit stereo sound with stereo speakers, have an expansion bay, pc card capability, two battery bays (and a ten-minute sleep/clock battery, which allowed for main batteries to be swapped out while in sleep mode), full size keyboard with F1-F12 function keys, be able to sleep while connected to an external monitor and have a battery contact cover included on the actual batteries. It included a single serial port which could be to connect to a serial printer or a network via apple's localtalk. In another first, it also included an AAUI port for connecting to non-localtalk (usually ethernet) networks.