NCR 7458 - Manual (Page 31)

Chapter 3: Hardware Service 3-7
2. Remove the USB Daughter Card.
a. Disconnect the USB Power Cable (P6) and the CD-ROM Audio
Cable (CN11, if present) from the USB Daughter Card.
b. Disconnect the USB Control Cable from the Motherboard.
20319
USB Power Cable
(P6)
CD-ROM Audio Cable
(CN11)
USB Daughter
Card
USB Control Cable
Note: When replacing the Daughter Card be sure to clamp the
USB Power Cable to the Power Supply as shown above.