Hey Everyone, Thanks in advance for any help you can offer. Problem: EFA Linker II (blue) 1Gb won't work on my Intel MacBook Pro running OS X 10.5.5 Details: The LED won't even go on. It flickers for a millisecond or two as the cord goes into the USB, but I attribute that to static or something. My GBA SP doesn't register that a cartridge is in when I put the EFA in it. EDIT: When no cartridge is in the GBA and I turn it on, there is a green light. With the EFA, there is a red light. I take that to mean that the GBA thinks there's an error in the cartridge. Attempts at fixing: I've searched and searched for something to help me online, some kind of mac driver or anything. I've looked for how to force a mac to recheck its USB ports, but to no avail. (I had to do a similar thing to get my Razr to charge off my USB, but luckily they are common enough that someone had written a program) Attempts at workaround: Having been foiled, I moved to the PC side of things (a large inconvenience for me, so ideally, I'd get this working for Mac). That also wouldn't simply pop up as a drive like a thumb drive might. The light didn't even turn on. I found other posts on this marvelous site of yours that helped out. Eventually, through installing drivers and such, I got the LED to be green, but I had to convince my PC that it was an EFA simple (which didn't do anything) and then a Long-Card (which, again, didn't do anything) No the LED stays on even when all the drivers for the thing are uninstalled. But regardless of what I do, I can't get my linker to work... and I really really want to play Ninja 5-0!! PLEASE PLEASE help. There's nothing I hate more than a waste of money. Thanks again.