I remember a post that discussed the technical details of the difference in construction of the boards, but can't find it now. I'm not sure if you read this post but it does give some info on why SATA boards are lower value.
viewtopic.php?f=12&t=21549&p=43051&hilit=non+sata+hard+drive+board#p43051Quote:
As technology and miniaturization progresses, manufacturing processes evolve requiring fewer components and lower cost materials.
Hard drive boards have not been immune to this progression. The increasing number of lower grade modernized SATA hard drive boards has forced the e-scrap industry to make some difficult decisions. These newer SATA boards return nearly half the amount in terms of recoverable materials than their older IDE and SCSI cousins.
As the ratio of SATA drives increases the overall value of the entire load decreases. Where there used to be a 3 to 1 ratio of IDE/SCSI -vs- SATA, the ratio has since flipped.
Maybe what you have here is an later style IDE and a early style SATA that are very similar.
