Typical IDE (both 3.5 and 2.5") hard drives and connector has one blocked pin. The CF adapter I got has all 44 pins and won't fit in the connector that has one blocked hole.  Which pin is the right one to snip?  The CF adapter doesn't have pin numbering so I can't even tell where pin 1 for reference.

Also the Wallstreet IDE connector has strange connector, it also connects to drive master/slave/Csel pins as well. When I plug the hard drive, I noticed the pin 1 on the hard drive didn't match the number on the connector board. Which side is the real pin 1?  Connector I'm talking about is below: