powerbook 540

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  1. mmu_man

    PowerBook 5xx USB-C PD Adapter

    I started designing the connector years ago but never really finished, I planned on using step-down boards and designing a case, much like @PotatoFi ended up doing for the 1xx series. I was a bit reluctant to sending only 15 volts, and I'd have liked to be able to check on schematics, but I...
    • mmu_man
    • Thread
    • power supply powerbook 520 powerbook 540 usb
    • Replies: 6
    • Forum: Hardware
  2. lilliputian

    Finding a specific DRAM chip for PB500

    Hey all! Inspired by @Branchus 's latest video demoing Kero's new RAM boards, I wanted to return to and try to upgrade my PowerBook 540c's own RAM module. RAM modules for the PowerBook 500 series are notoriously expensive now, and because the connector no longer exists, new boards cannot be...
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