System board connectors
Refer to the following illustration and table to identify the system board connectors for your model.
Table 4-1
Identifying system board connectors
Callout
Label
Component
Callout
Label
Component
(1)
PWRCPU
4-pin processor power
(14)
WIRELESS
WLAN module
(2)
XU1
Processor
(15)
SATA PWR0
Drives
(3)
CPUFAN
Processor fan
(16)
SD RDR
Card reader
(4)
DIMM1
Memory module
(17)
SATA0
Hard drive
(5)
DIMM2
Memory module
(18)
SATA2
Any SATA Device other than
primary hard drive
(6)
DIMM3
Memory module
(19)
SATA1
Any SATA device other than
primary hard drive
(7)
DIMM4
Memory module
(20)
PSWD
Clear system passwords
(8)
HSENSE
Hood sensor
(21)
BIOS BATTERY
RTC battery
(9)
SPKR
Speaker
(22)
CMOS
Reset CMOS
(10)
SSD2
M.2 solid-state drive
(23)
X16PCIEXP
Expansion card
(11)
SSD1
M.2 solid-state drive
(24)
X1PCIEXP1
Expansion card
(12)
PWR
6-pin main power
(25)
COM
Option port
(13)
PWRCMD
Power supply
(26)
COMA
Optional second serial port
System board connectors
27