Hot-swappable single-fan box with panel-side exhaust airflow, moving up to 31 CFM at 21.6 W maximum power.
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The Huawei FAN-031A-B (part number 02352CAB) is a fan box with panel-side exhaust airflow. It holds a single fan that cools the chassis and supports hot swapping, so it can be replaced without powering the device down. It measures 40 × 40 × 100.3 mm (H × W × D) and weighs 0.1 kg without packaging. Maximum power consumption is 21.6 W, with a maximum heat dissipation of 73.7 BTU/hour. The fan runs at up to 24,500 RPM (±10%) and moves up to 31 CFM, exhausting air from the panel side of the fan tray. A status indicator shows the module's state: off when the fan is not running, steady green while it starts, slow-blinking green when it is working properly, and steady red when it has a hardware fault and must be replaced — commonly a short circuit, blocked fan blades or a fault in the module itself. The fan vent diameter is 3 mm or 5 mm, depending on the delivery batch.
Hot-swappable 240 W DC power module in a 66 mm-wide case, taking a 48 V DC input and supplying 12 V with no fans.
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| Processor model | — | Rockchip RK3588 | 13th Gen Intel Core i7 |
| CPU cores | — | Cortex-A76 · 4 count, Cortex-A55 · 4 count | — |
| CPU maximum clock | — | 2.4 GHz | — |
| GPU model | — | G610 MC4 | Integrated Intel UHD Graphics |
| Memory capacity | — | 8 GB | 16 GB |
| Memory type | — | LPDDR5 | DDR4 |
| Memory channels | — | 2 count | 2 count |
| Memory form factor | — | On-board (soldered) | — |
| Onboard storage capacity | — | 128 GB | 512 GB |
| Onboard storage type | — | eMMC | — |
| Operating system | — | Android | Windows IoT, Windows |
| Operating system version | — | 15.0 & Above | Windows 11 IoT Enterprise / Enterprise 64-bit class, depending on configuration |
| Expansion slots | — | M.2 · E · 2230 · PCIe 3.0 · 1 count | — |
| USB ports | — | — | USB 2.0 · Type-A · 3 ports |
| Video ports | — | HDMI · Input · 4K@60 · 1 ports, HDMI · Output · 4K@60 · 1 ports | HDMI · Output · 4K@60 · 1 ports |
| Antenna count | — | 2 count | 2 count |
| Bluetooth version | — | 5.2 | 5.2 |
| Wi-Fi Generation | — | Wi-Fi 6 (802.11ax) | Wi-Fi 6 (802.11ax) |
| Wi-Fi standard | — | 802.11ax | 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac, 802.11ax |
| Frequency band | — | 2.4 GHz, 5 GHz | — |
| Ethernet controller | — | Realtek 8111H | — |
| Switch chipset | — | RTL8366SD | — |
| Module form factor | — | OPS-C | OPS |
| Width | 40 mm | 180 mm | 195 mm |
| Height | 40 mm | 30 mm | 30 mm |
| Depth | 100.3 mm | 195 mm | 180 mm |
| Weight | 0.1 kg | — | — |
| Colour | — | Black | Black |
| Installation method | — | OPS slot | OPS slot |
| Cooling method | — | Passive (fanless) | — |
| Acoustic noise | — | 35 dB | — |
| Storage temperature | — | -20 to 60 °C | -20 to 70 °C |
| Operating humidity | — | 5 to 95 % | — |
| Storage humidity | — | 5 to 95 % | — |
| Physical controls | — | Power button, Reset button | — |
| Status indicators | — | 2 count | — |
| Input Type | — | DC | DC |
| Power draw | maximum · 21.6 W | — | — |
| Operating temperature | — | 0 to 40 °C | 0 to 40 °C |
| IP rating | — | None | None |
| Specification group | active | — | active |
| Device Role | Accessory | Accessory | — |
| Link technology | — | Ethernet, Wi-Fi, Bluetooth | Wi-Fi, Bluetooth, Ethernet |
| Airflow direction | Panel-side exhaust | — | — |
| Hot-swappable | Yes | — | — |
| Number of fans | 1 count | — | — |
| Maximum fan speed | 24500 RPM | — | — |
| Maximum airflow | 31 CFM | — | — |
| Maximum heat dissipation | 73.7 BTU/h | — | — |