Epson 3865X Plus - Manual (Page 20)

Removing the Protector Card
If you have a 5 diskette drive, there is a protector card in
the diskette slot. This card is inserted at the factory to protect
the read/write heads in the drive. To remove it, flip the latch up
to pop the card out part way, then pull it out, as shown below.
(If you have a second 5 diskette drive, be sure to remove
the protector card from that drive as well.)
Save the protector card. If you transport your computer, you
may want to insert the card into your diskette drive prior to
shipping. This will protect the read/write heads during the
shipping process.
Setting Up Your System 1-3