Desktop PCs
HP Pro Mini 400 G9 reviews
Product specifications and review coverage for this exact model.
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Product overview
HP D66D7AT is listed in the pcs/workstations category. The recorded specifications include processor family: Intel® Core™ i7; internal memory: 16 GB; total storage capacity: 512 GB; operating system installed: Windows 11 Pro. This entry covers manufacturer code D66D7AT. Specifications relate to this exact source record; other editions or packages may differ.
Automatically assembled from the source specifications. This is a factual summary, not a hands-on review.
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Specifications
Manufacturer code: D66D7AT. Icecat product 140280453 · Checked 16 Sep 2026. The source lists this code for Great Britain. No specifications are transferred from other editions.
Key specifications
The main features to compare for this exact model. Missing details are not assumed.
| Processor family | Intel® Core™ i7 |
|---|---|
| Processor model | i7-12700T |
| Memory (RAM) | 16 GB |
| Total storage capacity | 512 GB |
| Storage media | SSD |
| Operating system installed | Windows 11 Pro |
| Discrete graphics card model | Not available |
| Chassis type | Mini PC |
| Wi-Fi | Yes |
| Ethernet LAN | Yes |
More product specifications
Open a section for the details that matter to you.
Audio & listening3 details
| Efficient-core Max Turbo Frequency | 3.4 GHz |
|---|---|
| Microphone in | Yes |
| Audio chip | Realtek ALC3252 |
Display1 detail
| Display included | No |
|---|
Processor, memory & storage23 details
| Processor manufacturer | Intel |
|---|---|
| Processor generation | 12th gen Intel® Core™ i7 |
| Processor cores | 12 |
| Processor threads | 20 |
| Processor boost frequency | 4.7 GHz |
| Processor frequency | 1.4 GHz |
| Processor cache | 25 MB |
| Processor cache type | L3 |
| Processor socket | LGA 1700 |
| Processor base power | 35 W |
| Maximum internal memory | 16 GB |
| Internal memory type | DDR4-SDRAM |
| Memory layout (slots x size) | 1 x 16 GB |
| Memory slots | 2x DIMM |
| Memory clock speed | 3200 MHz |
| Number of storage drives installed | 1 |
| SSD capacity | 512 GB |
| SSD form factor | M.2 |
| Discrete graphics card | No |
| On-board graphics card | Yes |
| On-board graphics card family | Intel® UHD Graphics |
| On-board graphics card model | Intel UHD Graphics 770 |
| Motherboard chipset | Intel Q670 |
Printing, scanning & paper1 detail
| Total carbon footprint (kg of CO2e) | 163.4 |
|---|
Connections & wireless14 details
| SSD interface | PCI Express |
|---|---|
| Top Wi-Fi standard | Wi-Fi 6E (802.11ax) |
| Wi-Fi standards | Wi-Fi 6E (802.11ax) |
| Bluetooth | Yes |
| Bluetooth version | 5.3 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 3 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| USB 3.2 Gen 2x2 Type-C ports quantity | 1 |
| HDMI ports | 1 |
| HDMI version | 2.1 |
| Ethernet LAN (RJ-45) ports | 1 |
| Combo headphone/mic port | Yes |
| Keyboard connectivity | Wired |
Power & battery3 details
| Power supply | 90 W |
|---|---|
| Power supply input voltage | 100 - 240 V |
| Power supply input frequency | 50 - 60 Hz |
Controls & features4 details
| WLAN controller manufacturer | Intel |
|---|---|
| WLAN controller model | Intel Wi-Fi 6E AX211 |
| HP Support Assistant | Yes |
| Operating temperature (T-T) | 10 - 35 °C |
Design & dimensions9 details
| Password protection | Yes |
|---|---|
| Password protection type | BIOS, Power on |
| Product type | Mini PC |
| Colour name | Jack black |
| Product colour | Black |
| Width | 177 mm |
| Depth | 175 mm |
| Height | 177 mm |
| Weight | 1.42 kg |
Software & compatibility1 detail
| Sustainability compliance | Yes |
|---|
Further product details30 details
| Performance cores | 8 |
|---|---|
| Efficient cores | 4 |
| Maximum turbo power | 99 W |
| Memory module type | SODIMM |
| Optical drive type | No |
| Total SSDs capacity | 512 GB |
| Number of SSDs installed | 1 |
| NVMe | Yes |
| On-board GPU manufacturer | Intel |
| Market positioning | Proven productivity |
| Trusted Platform Module (TPM) | Yes |
| Trusted Platform Module (TPM) version | 2.0 |
| Antenna type | 2x2 |
| Number of 2.5" bays | 1 |
| Intel® Turbo Boost Technology | Yes |
| HP Security tools | Trusted Platform Module TPM 2.0 Embedded Security Chip shipped with Windows 10 (Common Criteria EAL4+ Certified)(FIPS 140-2 Level 2 Certified); HP Secure Erase; HP Sure Click; HP Sure Sense; Absolute Persistence module; HP Sure Admin; HP BIOSphere Gen6; HP Tamper Lock; HP Sure Start Gen7; HP Platform Certificate On Device Installation |
| HP Management tools | HP Client Catalog (download); HP Driver Packs (download); HP Image Assistant (download); HP Client Management Script Library (download); HP Connect for Microsoft Endpoint Manager; HP Manageability Integration Kit (download); HP Patch Assistant (download) |
| HP GTIN (EAN/UPC) | 821844042502 |
| HP segment | Business |
| Operating relative humidity (H-H) | 10 - 90% |
| Keyboard included | Yes |
| Numeric keypad | No |
| Input device model | HP 125 Wired Mouse |
| Sustainability certificates | ENERGY STAR, EPEAT, TCO |
| Carbon emissions, manufacturing (kg of CO2e) | 139.79 |
| Carbon emissions, logistics (kg of CO2e) | 1.27 |
| Carbon emissions, end-of-life (kg of CO2e) | 0.96 |
| Total carbon emissions, w/o use phase (kg of CO2e) | 21.37 |
| General Product Safety Regulation (GPSR) URL | https://support.hp.com/us-en/document/ish_6126692-6126777-16?openCLC=true |
| UNSPSC-code | 43211507 |
Packaging & supplied accessories4 details
| Package width | 498 mm |
|---|---|
| Package depth | 235 mm |
| Package height | 132 mm |
| Package weight | 3.4 kg |
Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.