# COM-HPC Mini Base

# COM-HPC® Mini Type Reference

# Carrier Board in ATX Form Factor

![Close-up of a dark printed circuit board with various electronic components and connectors (no visible text or symbols)](.com-hpc-mini-base-datasheet-20250710/aba6829c334240edfab808aa3a207fec98e67550531aa34d6c5bb9861be16971.jpg)

Specifications

<table><tr><td>Core Module Interface</td><td>PICMG COM-HPC Revision 1.2Support COM-HPC Mini Type modules</td></tr><tr><td>Dimensions</td><td>305 mm x 244 mm (ATX)</td></tr><tr><td>Expansion Buses</td><td>1x PCI Express x8 slot (PCIe lane 8-15)*** Note: An add-on card is required for 2 PCIe x4 signal lanes.1x PCI Express x4 slot (PCIe lane 0-3) 1x M.2 M-key connector (PCIe lane 4-7)</td></tr><tr><td>POST LEDs</td><td>Onboard IO expander for BIOS POST code data on  $I^{2}C$  bus</td></tr><tr><td>Secondary BIOS</td><td>Onboard socket for secondary SPI flash</td></tr><tr><td>COM-HPC Connectors</td><td>Single 400-pin (10 mm height)</td></tr><tr><td>DP (Rear)</td><td>1x DP connector (DDI0)</td></tr><tr><td>eDP (Internal)</td><td>40-pin connector</td></tr><tr><td>Audio (Rear)</td><td>3x jacks (Mic-in/Line-in/Line-out)</td></tr><tr><td>SATA3.0 (Optional)</td><td>2x SATA3.0 (SATA0/SATA1)</td></tr><tr><td>USB 4 (Rear)</td><td>2x ports (Type C)</td></tr><tr><td>USB 3.2 gen2 (Rear)</td><td>2x ports (Type A)</td></tr><tr><td>USB 2.0 (Rear)USB 2.0 (Internal)</td><td>2x ports (Type A)2x ports (w/ 1 pin header)</td></tr><tr><td>Ethernet (Rear)</td><td>2x ports RJ45 10GBase-T up to 10 GbE</td></tr><tr><td>GPIO</td><td>1x 12-bit header GPIO</td></tr><tr><td>Serial Port</td><td>2x ports 10-pin header (from module)2x ports 10-pin header (from Super I/O)</td></tr></table>

Specifications

<table><tr><td>Fan</td><td>1x 4-pin fan connector, from module2x 4-pin fan connector, from Super I/O</td></tr><tr><td>MIPI-CSI</td><td>2x CSI connector (CSI0/CSI1)*</td></tr><tr><td>GP_SPI</td><td>1x 12-pin header*</td></tr><tr><td>Feature Connectors</td><td>Headers for SMBus, I2C0/1, eSPIHeader for front panelJumpers for module signal controls</td></tr><tr><td>Miscellaneous</td><td>Power button, Reset button, Sleep button, Status LEDs(Lid button and Buzzer by project support)</td></tr></table>

\* Note: Functions available are dependent on the COM-HPC module used.

Block diagram
![Based on the provided block diagram, here is an accurate and concise description of the labeled blocks and their connections:\n\n**Central Hub (Vertical Grey Block)**\nThis central column lists signal lines and headers acting as the system hub. From top to bottom, the labels are:\n*   NBSET 0\n*   NBSET 1\n*   SS 0-1 (DDI_0)\n*   EDP + DSI\n*   PCIe 4-5\n*   PCIe 6 / SATA_1\n*   PCIe 7 / SATA_0\n*   PCIe 0-3\n*   PCIe 8-11, 12-15\n*   GPIO_0-11\n*   UART_0-1\n*   I2C_0\n*   I2C_1\n*   Boot_SPI\n*   eSPI (opt.)\n*   SMB\n*   ESPI\n*   Thermal\n*   HDA /ADS/SNDW\n*   SNDW0-1\n*   USB3\n*   SS 6 (USB3_1)\n*   SS 2-3 (USB4_0)\n*   USB0\n*   USB5\n*   SS 7 (USB3_0)\n*   SS 4-5 (USB4_1)\n*   USB1\n*   USB2\n*   USB4\n*   USB(6:7)\n*   VCC_RTC\n*   Miscs.\n\n**Left Side Connections (External I/O)**\n*   **Top Connectors:** Two stacked RJ45-style connectors connect to the top two lines: **NBSET 0** and **NBSET 1**.\n*   **DP Port:** A connector labeled **DP** connects to **EDP + DSI**.\n*   **Audio:** A cluster of three audio jacks connects to a blue block labeled **Audio Codec Realtek ALC88B**, which connects to **HDA /ADS/SNDW**.\n*   **USB Ports (Top/Middle):** Two sets of USB ports connect via blue blocks labeled **TBT4 INX_JL80409R** and **USB PD TI TPS56941B1**. These connect to **USB3**, **SS 6 (USB3_1)**, **SS 2-3 (USB4_0)**, **USB0**, **USB5**, **SS 7 (USB3_0)**, **SS 4-5 (USB4_1)**, and **USB1**.\n*   **USB Ports (Bottom):** The lowest USB port connects to **USB2** and **USB4**.\n*   **SNDW Headers:** A small block labeled **2xSNDW Headers (SNDW_2 & 3) (opt.)** connects via a dashed line to **SNDW0-1**.\n\n**Right Side Connections (Internal Interfaces)**\n*   **M.2 & SATA:** **SS 0-1 (DDI_0)** and **EDP + DSI** connect via 'Max' blocks to **M.2 M Key (up to 22110)**. **PCIe 6 / SATA_1** and **PCIe 7 / SATA_0** connect via 'Max' blocks to **SATA (optional)**.\n*   **PCIe:** **PCIe 0-3** connects to **PCIe x4**. **PCIe 8-11, 12-15** connects to **PCIe x8**.\n*   **Super I/O & Peripherals:** A large blue block labeled **Super I/O NCT6126D** connects to **GPIO_0-11**, **UART_0-1**, **I2C_0**, **I2C_1**, **Boot_SPI**, **SMB**, **ESPI**, and **Thermal**.\n    *   **EEPROM** connects to **I2C_0** and **I2C_1**.\n    *   **ESPI Header** connects to **ESPI**.\n    *   **2nd FAN connector** (with a switch icon) connects to **Thermal**.\n    *   **COM Header** and **COM Header (COM3)** connect to the Super I/O.\n    *   **2x System FAN connector** connects to the Super I/O.\n    *   **2xSNDW Headers (opt.)** connects via a dashed line to **SNDW0-1**.\n*   **RTC:** **USB(6:7)**, **VCC_RTC**, and **Miscs.** connect to **RTC BAT Clear CMOS**.\n\n**Bottom Row**\n*   **2xUSB (front panel)** connects to the central block.\n*   **Front Panel**, **LEDs**, and **BTN (PWR, RST, LID, SLP)** are grouped together at the bottom right.\n\n**Note**\n*   Text at the bottom left reads: 'Note: SS means Super Speed Lanes. One SS consists of TX+/-, RX+/-' and 'USB0 means USB2.0 D+/D- port 0'.\n*   Text near the Super I/O reads: 'eSPI_CS1 enabled required'.](.com-hpc-mini-base-datasheet-20250710/8fc6960112ccea70d4379a89157d9d259aec094c4caf4285a72d6dd7ce95cd65.jpg)

Note: “Build option” indicates an alternative BOM configuration to support additional or alternative functions that are not available on the standard product. Be aware that these “build option” part numbers will need to be newly created and this will result in production lead times.
[🔗 Link to the original document](.com-hpc-mini-base-datasheet-20250710/com-hpc-mini-base-datasheet-20250710.pdf)