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LAN1
Intel X550
LAN2
x8
PCI-E
X32
x8
CABLE
CN1/2/3
x16
x16
#1
#1
#1
PE1 PE2
PE3
#2
#2
#2
D
E
F
Note: This is a general block diagram and may not exactly represent the features on
your motherboard. See the previous pages for the actual specifications of your moth-
erboard.
Figure 1-3.
System Block Diagram
NCSI
BMC
AST2500
VGA
VGA
32MB
SPI
HWM
BMC
SPI
FLASH
LPC/eSPI
PE
SPI
64MB
SPI
BIOS
MUX
FLASH
TPM
Header
SPI
USB2.0 [7]
PCH
PE[5]
LPC/eSPI
PE[0..3]
PE[6-7]/sSATA[0]
PE[8-9]/sSATA[2]
x8
x8
PCI-E
FX_UPLINK[0:7]
MUX
sSATA Gen3 [4, 5]
x8
x8
PCI-E
UPLINK[0:7]
MUX
USB2.0 [12,13]
USB3.0 [1,2]
x16
x8
x16
P U
2 I
UPI1
UPI0
#1
#1
#1
DMI
#2
#2
#2
A
CPU 0
B
C
HSSI
17
DDR4
DDR4
PHY
IPMI LAN
LAN
RTL8211F
RJ45
COM1
UART
COM2
USB
M.2
M.2
REAR
port 0,1
DMI
10.4G/11.2G T/s
Polarity Inversion
#1
#1
#1
PE1 PE2 PE3
DMI
#2
#2
#2
K
L
CPU 1
M
Chapter 1: Introduction
x16
PCI-E
X32
x8
CABLE
CN4/5/6
x8
x16
P U
2 I
UPI1
UPI0
#1
#1
#1
#2
#2
#2
G
H
J
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