The HP drives are certainly not manufactured by HP, only HP branded. Partnumber on label on 3rd photo is clearly Samsung's (S3C...) and seems to be some semi-c

The HP drives are certainly not manufactured by HP, only HP branded. Partnumber on label on 3rd photo is clearly Samsung's (S3C...) and seems to be some semi-custom CPU for TVs so it's entirely possible to be discarded by Samsung's customer instead of Samsung. Also parts that are discarded because they don't pass QC testing are usually not packaged (as packaging invalid parts is large mostly avoidable cost) or at least visibly and irreparably destroyed (like drilled through) to make them unsellable and unusable for counterfeiters, not thrown away with complete original packaging. The AMD board was certainly discarded during manufacturing, I would quess that by automated optical check after reflow (through hole components are not assembled, there seems to be missing component marked by the arrow label). Due to various process limitations, discarding such boards tends to be cheaper (and maybe even more green and eco-friendly) than trying to fix them.