Ya those are the same ones I found as well, I was just hoping that I could findem cheaper somewhere else 

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The Ac/dc computer is a joke.
"SDM" stands for 'Suunto Dive Manager' - it's suunto's dive log software. Suunto has left the download capability out of the Geeko but only in the SDM. The computer itself has an interface port and stores the profile data, just like all the other models do. You just can't read it out with the SDM is all. That's about to change, A couple of third party divelogs are going to support direct suunto downloads ( currently most just 'import' of the data after it's been downloaded with suunto's software ). Because they don't use suunto's software they WILL download from gekkos. If you wish to use suunto's software AND download a Gekko, you must fool the software into thinking it's talking to something other than a gekko.
I have a small program that does just that. It makes the gekko report to the SDM that it's a vyper. It 'Fools' the SDM into downloading it's data. It's also a completely safe thing and it's reversable.
http://home.gci.net/~liquidimagephoto/Other Free Stuff/Gekko2vyper.zip
what kind of cable do I need, and can I get it from ebay
I've had a gekko for the past 18 months with about 70 dives on it, does hooking it up to the computer download all the dives saved in the history or just the logbook?
To be specific, you can only download dives still in the logbook. The "history" info is just a single running counter of dives and total time, without any details about the dives that went into it. The download function downloads the profile data, which only comes from the "logbook" section.It will download everything in your computer. You should have all the data from all 70 dives.
hi is there anybody that has the download for the Suunto Gekko that enables the Gekko for downloading so it fool the SDM its a vyper please help bob