# Express-BASE6 R3.1

COM Express® R3.1 Comply Type 6 Reference Carrier Board in ATX Form Factor

![Green printed circuit board with various electronic components and connectors (no visible text or symbols)](.express-base6-r31-datasheet-20230516/b297404e6decb942259b624994f03cceec32bbda02a11a945a89ce66027ef1ce.jpg)

Specifications

<table><tr><td>Core Module Interface</td><td>PICMG COM Express Revision 3.1Support R3.1 Type 6 modules Basic / Compact size</td></tr><tr><td>Dimension</td><td>305 mm x 244 mm (ATX)</td></tr><tr><td>Expansion Busses</td><td>1x PCI Express x16 slot1x PCI Express x4 slot (PCIe lane 0-3)4x PCI Express x1 slot (PCIe lane 4, 5, 6, 7)</td></tr><tr><td>POST LEDs</td><td>Onboard diagnostics for BIOS POST code data on LPC bus</td></tr><tr><td>Secondary BIOS</td><td>Onboard socket for secondary SPI flash</td></tr><tr><td>COM Express Connectors</td><td>Two x 220-pin (8mm height)</td></tr><tr><td>HDMI</td><td>HDMI vertical connector on Rear I/O (DDI 3)</td></tr><tr><td>USB4</td><td>2x USB4 at Type C on Rear I/O*</td></tr><tr><td>VGA</td><td>DB15 on Rear I/O*</td></tr><tr><td>Flat Panel</td><td>34-pin header LVDS (build option for eDP*)</td></tr><tr><td>Audio</td><td>Mic/Line-in/Line-out on Rear I/O S/PDIF on Rear I/O</td></tr><tr><td>SATA</td><td>4x SATA (with power for SATA device)</td></tr><tr><td>USB</td><td>4x USB 3.x/2.0/1.1 Type A on Rear I/O2x USB 2.0/1.1 Type A on Rear I/O2x USB 2.0/1.1 at 9-pin header for front panel</td></tr><tr><td>LAN</td><td>2500/1000/100/10BASE-T compatible RJ45 on Rear I/O</td></tr><tr><td>GPIO/SD</td><td>8-pin header GPIO, SD card slot*</td></tr><tr><td>Serial Port</td><td>1x DB-9 (from Super I/O) on Rear I/O3x 10-pin header</td></tr><tr><td>FAN</td><td>1x 4-pin FAN connector (from COMe module)2x 4-pin FAN connector (from Super I/O)</td></tr><tr><td>Feature Connectors</td><td>Headers for SMBus, I2C, LPCHeader for front panel usageOthers for module control signals</td></tr><tr><td>Miscellaneous</td><td>BTN (ON/OFF, Reset, SLEEP, LID), LED, Buzzer</td></tr></table>

\* Interface and signal compatibility is subject to the module and carrier used.

# Ordering Information

# Carrier

Express-BASE6 R3.1

COM Express® Type 6 R3.1 Reference Carrier Board in ATX Form Factor

# Block diagram

![The flowchart illustrates a system architecture with two central vertical buses, **AB** and **CD**, connecting various components.\n\n**Labeled Blocks:**\n*   **Vertical Bars:** **AB**, **CD**\n*   **Left-Side Components:** **34 pin LVDS**, **eDP**, **SATA 0**, **SATA 1**, **SATA 2**, **SATA 3**, **PCIe 0-3 (x4)**, **PCIe 4**, **PCIe 5**, **Audio Codec ACL888**, **Super I/O NCT6126D**, **Port 80**, **SP 339**, **Analog VGA**\n*   **Central Components:** **TBT4 JHL8540**, **USB PD**, **USB Hub**, **SD Slot**, **MUX**\n*   **Right-Side Components:** **HDMI**\n\n**Connections:**\n*   **Left Side to AB:**\n    *   **34 pin LVDS** and **eDP** (with **build option**) connect to **AB**.\n    *   **SATA 0**, **SATA 1**, **SATA 2**, **SATA 3** connect to **AB**.\n    *   **PCIe 0-3 (x4)**, **PCIe 4**, **PCIe 5** connect to **AB**.\n    *   **Audio Codec ACL888** connects to **AB** via **HDA**. It connects to audio jacks and **SPDIF**.\n    *   **Super I/O NCT6126D** connects to **Port 80** (containing **8 8**), **LPC** (to connector), **FAN** (to connector), **RS-232/485** (to connector), **RS-232 pitch 2.54** (to connector), **2x** (to connector), and **SP 339** (to **Analog VGA** which connects to **AB**).\n\n*   **Central Connections (AB to CD):**\n    *   **USB 4 (2.0/1.1)** and **USB 5 (2.0/1.1)** connect to **TBT4 JHL8540** and **USB PD**. Outputs **USB4 1** and **USB4 2** connect to **CD**.\n    *   **USB 2 (2.0/1.1)** and **USB 3 (2.0/1.1)** connect to a USB jack. Outputs **USB 2 (3.x)** and **USB 3 (3.x)** connect to **CD**.\n    *   **USB 0 (2.0/1.1)** and **USB 1 (2.0/1.1)** connect to a USB jack. Outputs **USB 0 (3.x)** and **USB 1 (3.x)** connect to **CD**.\n\n*   **Local/Other Connections:**\n    *   **LAN (2.5GbE)** connects to an Ethernet jack.\n    *   **USB 6 (2.0/1.1)** connects to a USB-C port.\n    *   **USB 7 (2.0/1.1)** connects to **USB Hub**, which connects via **2x** to **9-pin pitch 2.54**.\n    *   **MUX** connects to **SD Slot**. **8-pin GPIO pitch 2.54** is a separate connector.\n    *   **SER 0/1**, **I2C, SMB**, **Feature, Controls**, and **SPI** connect to their respective local connectors.\n\n*   **CD to Right Side:**\n    *   **PCIe 16-31 (x16)** connects to a PCIe slot.\n    *   **DDI 3** connects to **HDMI**.\n    *   **PCIe 6** connects to a PCIe slot.\n    *   **PCIe 7** connects to a PCIe slot.](.express-base6-r31-datasheet-20230516/0920a7b0aeb51284b9ab045ac0be7764c5efcb7845cb8401098f8a2168136aad.jpg)
[🔗 Link to the original document](.express-base6-r31-datasheet-20230516/express-base6-r31-datasheet-20230516.pdf)