Contents Regulatory Notices ....................... 4 Safety Information ......................6 Specifications ........................ 7 Overview of Components ..................... 9 ME Overview........................ 10 Board Dimension ....................10 Rear I/O Panel ......................11 UID LED Button ..................... 11 VGA Port ........................ 11 USB 3.2 Gen 1 Type-A Port ................... 11 1000Base-T Ethernet Port (for mgmt.) ..............
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Power Connectors ...................... 25 JPWR1~2: 8-Pin ATX Power Connectors ............. 25 HDD_PWR1: 8-Pin HDD BP Power Connector ............ 25 JATX1: 4-Pin Power Connector ................26 JATX2: 12-Pin Power Connector ................26 PWM FAN Connectors ....................28 SYS_FAN1~6: Fan Connectors ................28 CPU_FAN1: CPU Pump Connector ..............
Chemical Substances Information In compliance with chemical substances regulations, such as the EU REACH Regulation (Regulation EC No. 1907/2006 of the European Parliament and the Council), MSI provides the information of chemical substances in products at: https://csr.msi.com/global/index CE Conformity Hereby, Micro-Star International CO., LTD declares that this device is in compliance with the essential safety requirements and other relevant provisions set out in the European Directive.
The terms HDMI™, HDMI™ High-Definition Multimedia Interface, HDMI™ Trade dress and the HDMI™ Logos are trademarks or registered trademarks of HDMI™ Licensing Administrator, Inc. Safety Information ∙ Always read the safety instructions carefully. ∙ Keep this User’s Manual for future reference. ∙...
Specifications Model D4040GB4N-25G D4040GB2N-25G Form factor Extended Micro-ATX Dimensions 243.84 mm (9.6") x 266.70 mm (10.5") Processor Single AMD EPYC™ 8004 Series Processor, TDP up to 225W 1 x AMD Socket SP6 (LGA 4844) Socket ∙ 2 x 25G SFP28 ports ∙...
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Model D4040GB4N-25G D4040GB2N-25G ∙ 1 x USB 3.2 Gen1 header ∙ 1 x front panel header ∙ 1 x GPIO header ∙ 1 x PMBus header ∙ 1 x IPMB header Internal I/O ∙ 2 x I2C headers ∙ 1 x chassis intrusion header ∙...
Rear I/O Panel 1000Base-T Ethernet Ports (for mgmt.) 25G SFP28 LAN Port UID LED Button VGA Port 1000Base-T Ethernet Ports (optional) USB 3.2 Gen 1 Type-A Port UID LED Button The UID (Unit Identification) button help users identify and locate a system, especially in high-density rack environments.
1000Base-T Ethernet Ports (optional) The standard RJ-45 LAN jack is for connection to the Local Area Network (LAN). You can connect a network cable to it. Link/ Activity LED Speed LED Status Description Status Description No link 10 Mbps Linked Green Orange 100 Mbps Data activity...
CPU Socket ⚠ Important Overheating will seriously damage the CPU and system. Always make sure the ∙ cooling fan can work properly to protect the CPU from overheating. Make sure that you apply an even layer of thermal paste (or thermal tape) between the CPU and the heatsink to enhance heat dissipation.
CPU & Heatsink Installation Use appropriate ground straps, gloves and ESD mats to protect yourself from electrostatic discharge (ESD) while installing the processor. ⚠ Important ∙ Images are for illustration purposes only; actual parts may vary. ∙ The load plate screws are Torx T20 and a torque value of 14 inch-lbs is recommended.
Installing Memory Modules 1. Open the side clips to unlock the DIMM slot. 2. Insert the DIMM vertically into the slot, ensuring that the off-center notch at the bottom aligns with the slot. 3. Push the DIMM firmly into the slot until it clicks and the side clips automatically close.
Storage Connectors JMCIO1~3: MCIO 8i Connectors These connectors function as MCIO interface ports. JMCIO1 supports only NVMe devices, while JMCIO2 and JMCIO3 support both SATA and NVMe devices. JMCIO1 JMCIO3 JMCIO2 Storage Connectors...
M2_1, M2_2: M.2 Slots (M Key, PCIe 5.0 x4, 2280) Please install the M.2 solid-state drive (SSD) into the M.2 slot as shown below. ⚽ Video Demonstration Watch the video to learn how to Install M.2 SSD. M2_1 M2_2 Installing M.2 SSD 1.
Expansion Slots PCIE_1 PCIE_2 PCIE_1, PCIE_2: PCIe Expansion Slots The PCI Express(Peripheral Component Interconnect Express) slots support PCIe interface expansion cards. ⚠ Important ∙ Both PCIe x16 slots support Gen3/4/5 speed. ∙ When adding or removing expansion cards, make sure that you unplug the power supply first.
Power Connectors JATX2 JATX1 JPWR1 JPWR2 HDD_PWR1 JPWR1~2: 8-Pin ATX Power Connectors This connector allows you to connect an ATX power supply. P12V JPWR1 P12V JPWR2 P12V P12V HDD_PWR1: 8-Pin HDD BP Power Connector These connectors provide power output to HDDs. HDD_PWR1 P12V P12V...
JATX1: 4-Pin Power Connector This connector allows you to connect an ATX power supply. PS1_PWROK JATX1 5VSB PS_ON_N JATX2: 12-Pin Power Connector This connector allows you to connect an ATX power supply. P3V3 P3V3 JATX2 +12V +12V ⚠ Important Make sure that all power connectors are securely connected to the power supply to ensure stable operation of the motherboard.
PWM FAN Connectors SYS_FAN1 SYS_FAN2 SYS_FAN3 SYS_FAN4 SYS_FAN5 SYS_FAN6 CPU_FAN1 1 2 3 4 5 SYS_FAN1~6: Fan Connectors The fan connectors support system/ CPU cooling fans. P12V SYS_FAN1~5 FAN_TACH BMC_PWM P12V SYS_FAN6 FAN_TACH BMC_PWM CPU_FAN1: CPU Pump Connector The fan connectors support CPU cooling pump. P12V CPU_FAN1 FAN_TACH...
USB Connectors JFUSB1: USB 3.2 Gen 1 Header This port is backward-compatible with USB 2.0 devices and supports data transfer rate up to 5 Gbps. P5V_USB5 USB2_FP2_DP USB3_FP1_RXN USB2_FP2_DN USB3_FP1_RXP USB3_FP2_TXP USB3_FP1_TXN USB3_FP2_TXN JFUSB1 USB3_FP1_TXP USB3_FP2_RXP USB2_FP1_DN USB3_FP2_RXN USB2_FP1_DP P5V_USB6 No Pin JFUSB1 USB Connectors...
Other Connectors and Components JFP1: Front Panel Header The front panel header is provided for electrical connection to the front panel switches and LEDs. P3V3 P3V3_AUX No Pin UID_LED+ FP_PWR_LED_B_N FP_ID_LED_N P3V3 SYS_ERR_LED_L LED_HDD_ACTIVITY_N SYS_FLT_LED_L JFP1 FP_PWR_BTN_N NIC1_LED+ FP_LNK_ACT_NIC1_LED_N FP_RST_BTN_N BMC_SMB_FP_DAT BMC_SMB_FP_CLK FP_ID_BTN_N...
JTPM1: SPI TPM Header This header connects to a TPM (Trusted Platform Module) (optional). Please refer to the TPM security platform manual for more details. No Pin Pull up P3V3_AUX TPM_RSMRST_N P3V3_AUX SPI_CPU0_3V3_CLK Pull up P3V3_AUX Pull up P3V3_AUX SPI_CPU0_3V3_MISO JTPM1 SPI_CPU0_3V3_MOSI SPI_TPM_CS_N...
JPMBUS1: PMBus Header Power Management Bus (PMBus) is a variant of the System Management Bus (SMBus) which is targeted at digital management of power supplies. SMB_PSU_CLK SMB_PSU_DAT JPMBUS1 SMB_PMBUS_ALERT_N P3V3_AUX JIPMB1: IPMB Header Intelligent Platform Management Bus (IPMB) header is used to connect various management components, such as Baseboard Management Controller (BMC).
FBP_I2C_1, HP_I1: I2C Headers I2C headers are used to connect to the System Management Bus (SMBus). FBP_I2C_1 is for front HDD backplane, and HP_I1 is reserved for NVMe hot-plug. P3V3 (NC) FP_I2C_CLK FBP_I2C_1 FP_I2C_DAT P3V3 (NC) HP_UBM_LVC3_SCL HP_I1 HP_UBM_LVC3_SDA HP_I1 FPB_I2C_1 Other Connectors and Components...
JCHASSIS1: Chassis Intrusion Header This header connects to the chassis intrusion switch cable. If the chassis is opened, the chassis intrusion mechanism will be activated. The system will record this status and show a warning message on the screen. To clear the warning, you must enter the BIOS utility and clear the record.
BAT1: CMOS Battery If the CMOS battery is out of charge, the time in the BIOS will be reset and the data of system configuration will be lost. In this case, you need to replace the CMOS battery. Replacing CMOS battery 1.
Jumpers ⚠ Important Avoid adjusting jumpers when the system is on; it will damage the motherboard. JSPI_MUX1 JREADY_SW1 JRTC_CLR1 JFORCE_SW1 JMCIO_SMBUS_SW1 JSATA_NVME_SW1 JSATA_NVME_SW2 Jumper Name Default Setting Description 1-2: System BIOS ROM and control by BMC SEL (default) JSPI_MUX1 2-3: Local BIOS ROM 1-2: BMC READY (default) JREADY_SW1 2-3: Wait BMC READY...
Onboard LEDs LED14: BMC Heartbeat LED This LED indicates the BMC (Baseboard Management Controller) status. Status Description BMC is not activated BMC is functioning normally Blinking Onboard LEDs...
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