Skip to main content

Airport Extreme Power Adapter Specs

Aftermarket Brick for my Airport Extreme
I have two Airport Extremes, but one was without its power adapter.  It was lost in transport, and Apple-original Extreme AC adapters are very expensive. Instead of having a useless paperweight around, I decided to buy an aftermarket adapter that meets all the specifications.

Modern USB power bricks are great, but only recently could they provide enough power for something like a high-end WiFi router.  And sadly, there are many unscrupulous sellers that sell inexpensive "Extreme compatible" bricks for a premium.  I decided that I wanted an affordable adapter.

The Specs of the Original

The A1202 Power Adapter Specs Label

I was lucky enough to have an original Extreme power brick, the Apple A1202 adapter that came with my other Extreme.  I read the specs, I tested it with my multimeter, and I measured the physical connector with my micrometer!  This is what I found:
  • 12 Volts DC
  • 1.8 Amps (per label)
  • Center pin is positive.  Barrel ring is negative.
  • Outside Diameter of barrel ring is 5.5 mm
  • Diameter of center pin is roughly 2.5 mm
  • Length of barrel ring including plastic tip is roughly 10 mm
(Just for reference, input is labelled as 100V - 240V AC, 50 - 60 Hz, 1.0 Amp)

Very happily, these specs are not weird at all.  In fact, they're fairly common.

Extreme Power Unit Replacement

Given all that, I ended up buying this power brick that meets all of my Airport Extreme's specs.  So far, this inexpensive wall wart works great. I just plugged it into my Extreme and it's been working great for the past couple months.  Any questions?  Let me know in the comments, or DM me!

My Extreme works great with cheap Wall Wart!

Postscript

Clearly I love my label maker.  It's a Brother.  It's not perfect, but it makes some great labels. 

Labels:

Popular posts from this blog

Fixing a SodaStream Jet, part 1: Disassembly Guide

I've had my SodaStream Jet for years, and once in a while something has gone wrong. Disassembly is the first step to repair.  Start with this article to see how to disassemble the SodaStream, and then once you have that down, scroll through my other articles to see how I repaired specfic SodaStream problems. SodaStream Jet Disassembly Guide Tools Required Flat head screwdriver Phillips head screwdriver 1. Remove the Carbonator.  Duh. 2. Remove the black panel lever The front big black tilt lever needs to be removed first. Removing this panel is tricky, but it isn't impossible. Looking up at the bottom of the black panel, there are two tabs, one on the left and one on the right. These tabs fully secure the panel in place. The trick is to use a flat-head screwdriver under the plastic to gently lever the tabs out of the way.  Note in the pictures how I approach these tabs with my screwdriver.  I usually release the left side first, and then I release ...
Read more

Sodastream Carbonator Leakage, Usage, and Weight

SodaStream 60L "Carbonator" CO2 cylinders have a specific weight when empty, plus about 410 or so grams for the CO2 they should have when they're "full".  A little while ago I went to buy a replacement Carbonator from my local hardware store. The dealer pulled a new Carbonator out of the box and sensed it was lighter than usual.  He put the "light" Carbonator in the "empty" pile and sold me a different one.  At that moment I concluded that it would be smart of me to weigh both new and empty SodaStream carbonators.  Here are the results. Weighing a SodaStream Carbonator - for both Science and Consumer Protection.       The dealer told me that sometimes the carbonators leak after they leave the SodaStream filling facility.  That means there could be an opportunity for customers like me to get ripped off! The SodaStream cylinders I buy claim to have a net product weight of 410 grams - and that means that a full Soda Stream Carbonator shou...
Read more

The Trick to Properly Fixing the Rubber Feet of a MacBook Pro

A black rubber foot of my trusty old MacBook Pro finally broke off, and I didn't like how it made the laptop wobbly.  A fix was needed, and quick! First I bought some replacement feet, the kind that just stick on.   These feet are nice because there is no need open up the machine to fix a broken foot.  They're very inexpensive, and the ones I bought have adhesive tape already applied - just peal and stick.  I bought feet like the ones found here. I have read many complaints about how the adhesive doesn't stick, but I think that's because people don't know the two tricks required to get the new feet to stick properly. New Feet to replace a lost Foot Important Trick 1: Make sure to remove all remnants of the old foot - including the pieces in the hole.   My factory-installed foot was attached both mechanically and with adhesive, but when the old foot sheared off, some pieces of the old foot remained in the hole.  Those plastic bits would h...
Read more

MacBook: burnt out magsafe connector repair

My MacBook (A1342 model from 2009-2010) stopped working, thanks to a cheap knockoff magsafe charger. The magsafe connector looked burnt with heat-distorted melted plastic and some black carbon surfaces.  Plugging in the charger resulted in no lights and no action.  My MacBook was dead. First I tried to clean up the connector with some Q-Tips, tooth picks and solvent, but that did little, as seen in this "after" picture (below).   The heat generated by the aftermarket charger permanently deformed and distorted the MacBook's magsafe connector.  Clearly the damage was significant. Burnt Magsafe Connector - Replacement Required! Looking at iFixIt , I determined that it would not be difficult to replace only the magsafe connector with the right tools.  I hoped and prayed that the problem was isolated to the connector assembly and not the logic board. I bought a replacement magsafe connector assembly (available from Amazon) for under $20 and started to rep...
Read more

Repairing a MagSafe Charger's Cord

Here is how to repair the cord of Apple MacSafe power adapters. There are three common failure modes of a magsafe wire: The base of the cord becomes frayed where the wire enters the power brick.  This is usually caused by repeatedly wrapping the cord far too tightly around the brick's "ears". The head of the magsafe connector becomes frayed.  This is usually caused by repeatedly removing the magsafe magnet by yanking on the cord. Chewed up cord.  This is where a pet or other pinching device weakens the cord. These types of failure are usually repairable at home using the technique described here. Tools Required: A beginner's Soldering kit, like this one, including a low-wattage soldering iron, rosin-core Solder, and wire strippers. Heat shrink tubing .   Any color works, but these days I use white to repair a MagSafe cord. One Soldering Sleeve, appropriate for 22 or 24 AWG wire Heat gun (optional.) Process:   The general process is t...
Read more

Modernizing old house network wiring - Part 6 - Assessing my Coaxial Cable TV Cabling

My prior blog entries were all about converting my house's telephone lines for Ethernet use. Today I started to address my old home's coaxial cable tv cables. Cable TV was a huge thing from the 1980s until the 2000s, but it is a dying concept. Still, the one thing I've learned is that you need to understand something before taking out an axe.   Almost every room in my house has a cable TV outlet (some rooms have more than one). In my basement, a cluster of 9 cables appear in the telecom panel, with some connected to a giant splitter and some just hanging loose. Half the cable seems to have been run properly: inside the walls of the house. The other half was sloppily strung up on the outside of the house. It looks like most of this cable was installed 20 years ago. So without further ado, I'm going to assess what I have. Identifying and Testing each cable My first order of business was to figure out where each cable was going to, as only one cable was labelled ("att...
Read more

Other Posts

Show more