What are we to say about this product great except that it serves its purpose. 2.5 "and 3.5" HDDs are sheetingable because drilling for both sizes are available. For 3.5 "drives, the disk must somewhat against the leading plastic are pressed because the pilot holes" in a nutshell "are accurate or perhaps tight as one might see it. Card Reader can also be in a 5.25" obstruct drive bay, so the possibilities are endless. You processing is OK, the optics external quality. With more than 8 a good price, or anprechendes product.