Engineering sample (ES) processors are also known as qualification sample processors. They are pre-production processors Intel loans to original equipment manufacturers (OEMs), original device manufacturers (ODMs), and independent software vendors (ISVs) to be used in the product design cycle before product launch.Information About Engineering Sample Processors - Intel
Intel Confidential CPU means, pre-production processors; Intel provides these processors to computer manufacturers for testing purposes, they are Intel property and not for sale. I suggest you to contact the place of purchase and request a refund on them.Bought Intel Confidential CPU, what is it?
The QS version is the second round of chips released before retail that are much more closer refined versions pretty much identical to retail/oem but is not labeled as such.2017/09/11ES vs QS | Overclock.net