AE title
DICOM identifier for a network-connected device. Used in every DICOM association handshake.
Why it matters to buyers: Case-sensitive in places the DICOM spec isn't. #1 cause of 'works on echo, fails on store' troubleshooting.
Why it matters to engineers: Document every AE title + IP + port when accepting a refurbished system. PACS expects matching AE title.