Penguin Computing Relion 1900e, Technical Manual, Page: 116 / 174

Relion 1900e/2900e Manual
101 Revision 1.3
10.5 Other Connectors and Headers
10.5.1 Chassis Intrusion Header
The server board includes a 2-pin chassis intrusion header which can be used when the chassis is configured
with a chassis intrusion switch and the proper platform management SDR is programmed and installed. On
the server board, this header is labeled “CHAS_INTR” and is located on the right edge of the server board.
The header has the following pin-out.
Table 43. Chassis Intrusion Header Pin-out ("CHAS_INTR")
Signal Description Pin#
FP_CHASSIS_INTRUSION 1
GROUND
2
If configured, the BMC can monitor the state of the Chassis Intrusion signal and makes the status of the
signal available through the Get Chassis Status command and the Physical Security sensor state. A chassis
intrusion state change causes the BMC to generate a Physical Security sensor event message with a General
Chassis Intrusion offset (00h).
The BMC detects chassis intrusion and logs a SEL event when the system is in the on, sleep, or standby state.
Chassis intrusion is not detected when the system is in an AC power-off (AC lost) state.
The BMC hardware cannot differentiate between a missing chassis intrusion cable or connector, and a true
security violation. If the chassis intrusion cable or connector is removed or damaged, the BMC treats it as if
the chassis cover is open, and takes the appropriate actions.
System fans can be set to boost to maintain proper system cooling when a chassis intrusion is detected.
10.5.2 Storage Device Activity LED Header
The server board includes a 2-pin storage device activity LED header used with some SAS/SATA controller
add-in cards. On the server board, this header is labeled “HDD LED” and is located on the left edge of the
server board. The header has the following pin-out.
Table 44. Hard Drive Activity Header Pin-out ("HDD_LED")
Signal Description Pin#
LED_HDD_ACT_N
1
TP_LED_HDD_ACT 2
10.5.3 Intelligent Platform Management Bus (IPMB) Connector
The Intelligent Platform Management Bus (IPMB) is designed to be incorporated into mission critical server
platforms for the main purpose of supporting Server Platform Management. The server board includes a 4-
pin Intelligent Platform Management Bus (IPMB) connector located on the left edge of the server board. The
connector has the following pin-out.
Table 45. IPMB Connector Pin-out
Signal Description Pin#
IPMB Data
1
Ground 2
IPMB Clock 3
5V AUX 4