HP 744 Hardware User Manual page 13

Hewlett-Packard's system certification tests were conducted with HP-sup-
ported peripheral devices and HP shielded cables, such as those you receive
with your computer. Changes or modifications not expressly approved by
Hewlett-Packard could void the user's authority to operate the equipment.
Korean Regulations on EMI, 1991V3
Please note that this device has been approved for business purposes with
regard to electromagnetic interference.
VCCI Class A ITE
Preface-3