Other Connectors - Supermicro SUPER SUPERSERVER 2028U Series User Manual

Other Connectors

Fan Headers
The serverboard has eight system/
CPU fan headers (Fan 1~Fan 8). All
are 4-pin fans headers, which are
backward compatible with traditional
3-pin fans. Fan speed control is
available for 4-pin fans only. The
fan speeds are controlled by IPMI.
See the table on the right for pin
definitions.
Chassis Intrusion
A Chassis Intrusion header is located
at JL1. Attach an appropriate cable
from the chassis to inform you of a
chassis intrusion when the chassis
is opened.
Internal Speaker
The Internal Speaker, located at
SP1, can be used to provide audible
indications for various beep codes.
See the table on the right for pin
definitions.
TPM Header/Port 80
A Trusted Platform Module/Port 80
header is located at JTPM1 to provide
TPM support and Port 80 connection.
Use this header to enhance system
performance and data security. See
the table on the right for pin definitions.
Chapter 5: Advanced Serverboard Setup
Pin Definitions
Pin# Definition
1 Ground
2 +12V
3 Tachometer
4 Pulse Width Modulation
(PWM)
Chassis Intrusion
Pin#
1
2
Internal Speaker
Pin#
Pin 1
Pin 2
TPM/Port 80 Header
Pin Definitions
Pin # Definition
1 LCLK
3 LFRAME#
5 LRESET#
7 LAD 3
9 +3.3V
11 LAD0
13 SMB_CLK4
15 +3V_DUAL
17 GND
19 LPCPD#
5-17
Fan Header
Pin Definitions
Definition
Intrusion Input
Ground
Pin Definition
Definitions
Pos. (+) Beep In
Neg. (-) Alarm
Speaker
Pin # Definition
2 GND
4 <(KEY)>
6 +5V (X)
8 LAD 2
10 LAD1
12 GND
14 SMB_DAT4
16 SERIRQ
18 CLKRUN# (X)
20 LDRQ# (X)