This guide is for use with Leopard only! It will work with the following Marvell ethernet cards:
SK-9E21, SK-9E22, SK-9E81, SK-9E82, SK-9E91, SK-9E92, SK-9S21, SK-9S22, SK-9S81, SK-9S82, SK-9S91, SK-9S92, 88E8053, 88E8055, 88E8055-B0, 88E8061, 88E8062 (88E8061 Dualport)

1.) Find your vendor ID and device ID. I don't know what yours is, but it should look something like this:

Vendor 11AB
Device 4351

Write this down, you will need it to continue past step 3.

2.) Open terminal and type the following:



3.) Scroll down and find the ethernet card you are using, for example, if you are using Marvell Yukon 88E8053, it would show up as:

<key>Yukon-88E8053</key>

Below your ethernet card look for IOPCIPrimaryMatch, for Yukon 88E8053 it looks like this:

<key>IOPCIPrimaryMatch</key>
<string>0x436211AB</string>

After the 0x is the 4 digit Device ID, replace it with yours, and the 4 digits after that is the Vendor ID, replace it with yours also. For mine, I replaced 62 with 51 so it looked like:

<key>IOPCIPrimaryMatch</key>
<string>0x435111AB</string>

When finished, overwrite and exit the file.

4.) Type the following command into terminal:



5.) Repair permissions by typing the following:



6.) Reboot using -x -v flags

7.) Reboot again and your ethernet should work



PLEASE POST ANY QUESTIONS, COMMENTS, AND PROBLEMS HERE AND I WILL HELP YOU ALL!