Some 9800s had the floppy power plug.
Yeah, the 128-bit "9800 Pro", some vanilla 9800's, and 9800SE used the smaller floppy style connectors.
The snowman is correct. Molex connectors are used on all hard drives (excluding sata) and optical drives. The floppy used the smaller 3 pin.
- My WD Raptors have both the new style SATA power connector and the 4 pin molex, you can use either of them (but not both)
-The floppy connector has 4 wires also, but it is smaller. I beleive that these are also technically "molex" connectors as well, just a different size.
...As far as removing it goes, the connector should just be sleeved over the thick rod-like wires that are coming out of the PCB. These won't come off very easily, however I have actually slipped the entire connector off of the wires. No biggie, just slip it back on, just make sure you put it back on the same way it was or you will reverse the polarity next time you plug in a power supply. You can see what I mean here...
http://www.newegg.com/app/Show....jpg/14-102-382-04.jpg
notice that the connector is crooked... That is because it's just slipped over the actual metal rods. As long as you don't break those, you're ok. If the connector comes off with the plug, just put it back on.