• Molex 2139 KK 3.96MM 14pin
• wire is 18ga 300v from power supply to mobo
• the standard rating is a 200W power supply

• This system requires a 'tick' circuit which provides a 50/60Hz +/-10% reference signal to the video chipset or motherboard jumper J300.
• Would require a simple linear regulator circuit using a 7905 or equivalent, to generate -5V.
• At motherboard location J300, cover pins 2 and 3 with a jumper to internally generate TICK signal
  • from AmigaKit adapter
  • is this just their hardware adapter or all atx adapters?

Sadly, you can't just substitute any ATX in for the A2000, see below. There is a small after market for replacement power supplies. See the A500 Power page for an easy Cisco swap.

Meanwell

Meanwell has become a standard for replacing power supplies for the 8 and 16 bit lines.

• MPQ-200B
  • medical rated, high quality + high cost
  • rated for 200W
  • output
    • +5V at 15A (vs 20.5A)
    • +12V at 7A (vs 8A)
    • -5V at 2A (vs .3A)
    • -12V at 2A (vs .3A)
• RQ-125B
  • only 125W!
  • output
    • +5V at 11A (vs 20.5A)
    • +12V at 4.5A (vs 8A)
    • -5V at 1A (vs .3A)
    • -12V at .5A (vs .3A)

Here's the standard PC power supply to compare to Amiga's needs. Nowadays, there is seldom a -5V power line. If you can find an old AT power supply you're almost guaranteed a -5V. Keep an eye out at yard sales and thrift stores. A quick and easy indicator is if a 5.25“ or 3.5” drive is in the PC. This usually means it is an old power supply so the -5V may be there.

• /PSON activated by pressing and releasing the power button while the power supply is in standby mode. Activating /PSON connects the power supply's /PSON input to ground, thereby switching the power supply to full-on condition.
• 18 AWG is recommended for all wires except pin 11, which should be 22 AWG. For 300W configurations 16 AWG is recommended.