Headers And Connectors - Supermicro SuperServer ARS-210ME-FNR User Manual

4.2 Headers and Connectors

Fan Headers
There are six 4-pin fan headers on the motherboard. Although pins 1-3 of the fan headers
are backward compatible with the traditional 3-pin fans, we recommend you use 4-pin fans
to take advantage of the fan speed control via Pulse Width Modulation (PWM) through the
thermal management. This allows the fan speeds to be automatically adjusted based on the
motherboard temperature.
M.2 M-Key PCIe 4.0 Connector (2280/22110)
The motherboard has one M.2 slot at JMD1. M.2 was formerly known as Next Generation
Form Factor (NGFF) and serves to replace mini PCIe. M.2 allows for a variety of card sizes,
increased functionality, and spatial efficiency. JMD1 supports an M-Key PCIe 4.0 device in
the 2280 and 22110 form factors.
4-pin BMC External I
A System Management Bus header for IPMI 2.0 is located at JIPMB1. Connect the appropriate
cable here to use the IPMB I
definitions.
Fan Header
Pin Definitions
Pin# Definition
1 Ground (Black)
2 2.5 A/+12 V (Red)
3 Tachometer
4 PWM_Control
C Header
2
C connection on your system. Refer to the table below for pin
2
External I
2
Pin Definitions
Pin# Definition
1 Data
2 Ground
3 Clock
4 3V3_STBY
54
Chapter 4: Motherboard Connections
C Header