ARH173 Overview
A mobile robot, a hospital cart or a vision system in a 24 V machine cabinet has to run its software from whatever supply the machine provides, and a battery voltage moves with the charge. The ARH173 is a DFI industrial Mini-ITX motherboard that takes 12 to 28 V DC directly, with Intel Core Ultra mobile processors soldered on board and every listed Arrow Lake and Meteor Lake H and U option available.
For navigation and multi-camera inference, the 28 W H-series parts, the Core Ultra 7 265H, 255H, 165H and 155H and the Core Ultra 5 235H, 225H, 135H and 125H, add Intel Arc graphics, where DFI lists OpenVINO, DirectML and ONNX Runtime support. The 15 W U-series parts suit battery-powered designs where every watt counts, and they can take a fanless heatsink on request; the H parts use an active cooler as standard. The 265, 235, 165 and 135 processors support Intel vPro. Two DDR5 5200 MHz SO-DIMMs hold up to 128 GB in dual channel.
Three 2.5GbE ports on Intel I226-V and I226-LM controllers connect cameras or a lidar, the vehicle or machine network and an uplink. An M.2 B-key with Nano SIM takes a cellular module for fleet connectivity, an E-key takes Wi-Fi, and an M.2 M-key runs NVMe at PCIe Gen4 x4 for logging, with two SATA 3.0 ports and a PCIe x4 Gen4 slot for a CAN or capture card. Four rear USB 3.2 Gen 2 ports, four USB 2.0 headers, four COM ports and 8-bit DIO serve motor controllers and sensors. DP++, HDMI, USB-C with DisplayPort Alt Mode and an optional M2A panel module give four displays.
The ARH173 takes 12 to 28 V DC on a barrel jack or 4-pin connector and operates from -5 to 65 °C, with CE, FCC, UKCA and RoHS compliance, a discrete TPM and a watchdog programmable from 1 to 255 seconds. DFI lists Windows 11 IoT Enterprise LTSC and Linux. On a regulated 12 V supply, the ARH171 is the same board with a 12 V input.
ARH173 Specifications
| Overview | |
|---|---|
| Brand & Model | DFI ARH173 |
| Features | Embedded Industrial |
| Performance | |
| Processor Series | Intel Core Ultra Series 1 Meteor Lake Intel Core Ultra Series 2 Arrow Lake-H Intel Core Ultra Series 2 Arrow Lake-U |
| Processor Models | Intel Core Ultra 5 125H: 1.2~4.5GHz, 14 Cores, 18 Threads, 18MB Cache, 28W Intel Core Ultra 5 125U: 1.3~4.3GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 5 135H: 1.7~4.6GHz, 14 Cores, 18 Threads, 18MB Cache, 28W Intel Core Ultra 5 135U: 1.6~4.4GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 5 225U: 1.5~4.8GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 5 235U: 2.0~4.9GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 7 155H: 1.4~4.8GHz, 16 Cores, 22 Threads, 24MB Cache, 28W Intel Core Ultra 7 155U: 1.7~4.8GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 7 165H: 1.4~5.0GHz, 16 Cores, 22 Threads, 24MB Cache, 28W Intel Core Ultra 7 165U: 1.7~4.9GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 7 255U: 2.0~5.2GHz, 12 Cores, 14 Threads, 12MB Cache, 15W Intel Core Ultra 5 225H: 1.7~4.9GHz, 14 Cores, 14 Threads, 18MB Cache, 28W Intel Core Ultra 5 235H: 2.4~5.0GHz, 14 Cores, 14 Threads, 18MB Cache, 28W Intel Core Ultra 7 255H: 2.0~5.1GHz, 16 Cores, 16 Threads, 24MB Cache, 28W Intel Core Ultra 7 265H: 2.2~5.3GHz, 16 Cores, 16 Threads, 24MB Cache, 28W Intel Core Ultra 7 265U: 2.1~5.3GHz, 12 Cores, 14 Threads, 12MB Cache, 15W |
| Performance Cores | 12 Cores 14 Cores 16 Cores |
| AI Performance | 11–13 TOPS |
| Memory | 2x DDR5 5200MHz SO-DIMM Slots, 128GB |
| BIOS | AMI |
| Secure Crypto Processor | TPM 2.0 (Trusted Platform Module) |
| Operating System | Linux |
| Graphics | |
| Integrated GPU | Intel UHD Series |
| Display Standards | DP++ |
| Multi Display Support | Quad Display Support |
| Display Outputs | 1x Display Port 1x HDMI 1x USB Type C |
| Audio | |
| Interface | Line-Out Mic-In |
| I/O | |
| Ethernet | 3x Ethernet Ports |
| 3x 2.5 GbE LAN [RJ45] | |
| LAN Controllers | Intel I226LM Intel I226V |
| USB | 9x USB Ports |
| 1x USB 3.2 Gen 2 [Type C] 4x USB 2.0 [Board] 4x USB 3.2 Gen 2 [Type A] | |
| Serial | 4x Serial Ports |
| 2x RS232 [Board] 2x RS232/422/485 [Board] | |
| Digital I/O | DIO [8-lines] |
| Remote Management | Intel vPro |
| Expansion | |
| M.2 | 4x M.2 Expansion Slots |
| 1x M.2 A-Key [Display/PCIe x1/USB/SIM] [3030/3042/3060] 1x M.2 B-Key [PCIe x1 Gen3/USB 3.2 Gen 2/USB 2.0] [2242/3042/3052] 1x M.2 E-Key [PCIe x1/USB 2.0] [2230] 1x M.2 M-Key [PCIe x4 Gen4] [2242/2280] | |
| PCIe | 1x PCIe Slots |
| 1x PCIe [x4 Slot] [Gen4] | |
| SIM Slots | 1x SIM Slots |
| Wireless Connectivity | Optional 4G Modem Optional WiFi/Bluetooth |
| Storage | |
| Storage | 1x M.2 SSD 2x SATA Ports |
| NVMe | NVMe SSD Support |
| Power | |
| Power Input | 12-28V DC [4-Pin] 12-28V DC [Barrel Connector] |
| Environmental Conditions | |
| Operating Temperature | -5°C to 65°C [23°F to 149°F] |
| Storage Temperature | -40°C to 85°C [-40°F to 185°F] |
| Humidity | 5% - 90% (Non-condensing) |
| Certification | CE FCC RoHS UKCA |
| Mechanical Properties | |
| Dimensions | 170mm x 170mm (6.69" x 6.69") |
- ARH173 Datasheet Download
Official DFI USA Distributor
Things Embedded is an official DFI USA distributor, supplying the ARH173 with the chosen Core Ultra processor, memory, storage, cellular or Wi-Fi modules and an OS image, fitted with cooling to suit the processor and tested before it ships. On a regulated 12 V supply, ARH171 is the same board with a single 12 V input. We can help with supply wiring and the choice between H and U processors.
See our Intel Core Ultra boards and systems, other Mini-ITX SBCs and the full range of embedded boards.
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