Hot-swappable 400 W DC power module with back-to-front airflow, taking a 48 V DC input and supplying 12.3 V.
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The Huawei PDC400S12-CB (part number 02314VUG) is a 400 W DC power module with back-to-front airflow: its own fan exhausts air from the power panel side. It is hot-swappable, and the device it powers has 1+1 power module redundancy, so a module can be replaced without interrupting operation. It accepts a rated input of +48 V DC or −48 V DC to −60 V DC, across input ranges of +38.4 V DC to +57 V DC and −38.4 V DC to −72 V DC. Rated input current is 10 A, with a maximum of 12 A. It supplies 12.3 V at a rated 32.5 A and 400 W. It measures 39.6 × 66 × 215 mm (H × W × D) and weighs 1.0 kg without packaging. It stops output on input undervoltage, input overvoltage and overtemperature, restoring it automatically once the condition clears, and shuts down on input overcurrent without restarting on its own. Output overcurrent, overvoltage and short circuits also stop output and recover automatically — but the module locks if overcurrent or a short circuit happens five or more times within 2 minutes, or overvoltage three or more times within 5 minutes. Connect the black wire to the RTN (+) terminal and the blue wire to the NEG (−) terminal. On the supply side, use a C16 or lower circuit breaker when one breaker feeds one power module, and C25 or higher when one breaker feeds several. The STAT indicator is steady green when input and output are normal and blinks green (4 Hz) during online loading. It is off when the module has no output power, or its output is abnormal because of a fan fault, overtemperature protection, abnormal input (no DC input, DC input overvoltage or undervoltage) or abnormal output (overvoltage, overcurrent or short circuit).
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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 | 66 mm | 180 mm | 195 mm |
| Height | 39.6 mm | 30 mm | 30 mm |
| Depth | 215 mm | 195 mm | 180 mm |
| Weight | 1 kg | — | — |
| Colour | — | Black | Black |
| Installation method | — | OPS slot | OPS slot |
| Cooling method | Active (fan) | 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 | DC |
| DC Input Voltage | 38.4 to 57 V | — | — |
| 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 | — | — |
| DC Output Voltage | 12.3 V | — | — |
| Rated output power | Rated · 400 W | — | — |
| Rated output current | Rated · 32.5 A | — | — |
| Nominal voltage | 48 V | — | — |
| Input current, maximum | 12 A | — | — |
| Rated input current | 10 A | — | — |
| Number of power inputs | 1 count | — | — |
| Protection features | Input undervoltage, Input overvoltage, Input overcurrent, Output overcurrent, Output overvoltage, Output short circuit, Overtemperature | — | — |