Lenovo x3300 M4 7382 Installation And Service Manual page 185

The following illustrations show the hot-swap power cable routing.
ATX power
cable (P1)
DDR1 power cable (P3)
CPU2_DDR2 Microprocessor 1
power cable (P4) power cable (P2)
Power SMbus cable
SMbus
connector
DVD/Tape power
cable (4 pins*2,
SATA power connector*2)
Backplane power
cable (16 pins)
.
Chapter 6 Removing and replacing components
Backplane power
cable (16 pins)
173