FYI I didn't want to pay that much for a cable not knowing if it would even work especially, so I spliced my own. The longer cable has its data pins grounded while the shorter one can be used to sync with a pc. Both types of connections work great. I have a nice solar charger, and it now works charging the n900!

each adapter totaled about $5, though I'm sure you can probably dig around more and find some of the parts cheaper. I did get the added joy from being able to make my own