Yes.... I have iStat but as far as I know that does not check temp for anything but my internal HDD. I have two USB3 docks and rotate HDDs in them as needed. I just pulled my master drive out and it was almost too hot to touch. I've recently had a HDD die for a different reason but am now being very careful about my hard drives. Is there a program to check temperature on external drives? I just checked on an OWC external HDD with an enclosure and iStat won't give me the temp there either, so it must not be because I'm using a dock. Do HDDs have thermometers?