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Host Fabric Interface (HFI) Carrier Card Sideband Headers (for the F Model CPU
Only)
Two Host Fabric Interface (HFI) carrier card headers are located at JHFI1/JHFI2 on the
motherboard. The JHFI headers are used when the F model processor is installed on the
CPU socket on the motherboard. Use an HFI sideband cable to connect the carrier card to the
JHFI headers, and use an appropriate IFP (Internal-Faceplate-to-Processor) cable (optional)
to connect the carrier card to the F model processor to enhance system performance (See
Note below). See page 34 for the installation instructions. Please note that in a dual-processor
system, JHFI1 is used for CPU1, and JHFI2 is for CPU2. Refer to the table below for the
pin-out descriptions.
Note: For the HFI carrier card to function properly, please purchase the appropriate
IFP cable from Supermicro. Please refer to Supermicro's website at www.supermicro.
com for the part number of the IFP cable specified for your system.
VGA
JUIDB2
UID
LED1
LEDM1
BMC
S-UM12
JTPM1
PCH
JSD2
JHFI2
2
JF1
CPU2
LEDPWR
JF1
JL1
FAN5
HFI Carrier Card Sideband Header
Pin Definitions
Pin#
Definition
1
Ground
3
HFI0_MODPRST_N
5
LED_HFI0_N
7
Ground
9
Ground
11
HFI1_MODPRST_N
13
LED_HFI1_N
15
Ground
17
Reserved
19
P2V5_PWRGD
21
P2V5
23
Ground
IPMI_LAN USB0/1 (3.0)
COM1
LAN
JSDCARD1
CTRL
JRK1
BT1
JBT1
SP1
PSU2
JSD1
JHFI1
JNVI2C1
GPU PWR1
P1_NVMe0 P1_NVMe1
1
BIOS
X11DPU
DESIGNED IN USA
LICENSE
REV:1.10
BAR CODE
IPMI CODE
CPU1
FAN3
51
Pin#
Definition
2
SMB_HFI_0_SCL
4
SMB_HFI_0_SDA
6
HFI0_RESET_N
8
HFI0_INT_N
10
SMB_HFI_1_SCL
12
SMB_HFI_1_SDA
14
HFI1_RESET_N
16
HFI1_INT_N
18
P3V3
20
P3V3
22
PCIe_SMBCLK
24
PCIe_SMBDAT
PSU1
FAN2
FAN1
Chapter 2: Installation
1. JHFI1 (for CPU1)
2. JHFI2 (for CPU2)
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