Question hdd case windows

I use a 2.5″ HDD + USB 3.0 enclosure case, when the Windows eject function “safely remove hardware” is executed and finished and the letter “E:” disappears from Windows, after what is the situation of the magnetic plates and the read/write heads? Note: without disconnecting the USB cable from the PC/enclosure case after ejection

My 2.5″ HDDs are a bit old 2013 models WD10JPVX-08JC3T5 and HGST HTS541010A99E662 i other new HDD 2.5″ seagate ST500LM030

my enclosure cases 2.5″ HDDs + Kesu 2530 or Orico 25pw1 black