Audio
Audio chip	Realtek ALC3252
Brand-specific features
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 Software provided	HP Notifications; HP PC Hardware Diagnostics UEFI; HP Connection Optimizer; HP Privacy Settings; HP PC Hardware Diagnostics Windows; HP Desktop Support Utilities; MyHP; HP QuickDrop; HP Easy Clean; HP Easy Clean Keyboard Drive
HP GTIN (EAN/UPC)	199642200159
HP segment	Business
HP Support Assistant
Carbon footprint
Total carbon footprint (kg of CO2e)	163.4
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
Design
Chassis type	Mini PC
Colour name	Jack black
Number of 2.5" bays	1
Product colour	Black
Introduction year	2025
Display
Display included
Graphics
Discrete graphics card model	Not available
On-board GPU manufacturer	Intel
On-board graphics card family	Intel® UHD Graphics
On-board graphics card model	Intel UHD Graphics 730
Discrete graphics card
On-board graphics card
Keyboard
Keyboard connectivity	Wired
Memory
Internal memory	16 GB
Maximum internal memory	16 GB
Internal memory type	DDR5-SDRAM
Memory layout (slots x size)	1 x 16 GB
Memory slots	2x DIMM
Memory clock speed	4800 MHz
Memory module type	SODIMM
Memory data transfer rate	4800 MT/s
Network
Ethernet LAN data rates	10,100,1000 Mbit/s
Top Wi-Fi standard	Wi-Fi 6E (802.11ax)
Wi-Fi standards	Wi-Fi 6E (802.11ax)
WLAN controller manufacturer	Intel
WLAN controller model	Intel Wi-Fi 6E AX211
Antenna type	2x2
Bluetooth version	5.3
Ethernet LAN
Wi-Fi
Bluetooth
Operational conditions
Operating temperature (T-T)	10 - 35 °C
Operating relative humidity (H-H)	10 - 90%
Other features
UNSPSC-code	43211507
Packaging content
Mouse connectivity	Wired
Input device model	HP 125 Wired Mouse
Mouse included
Keyboard included
Numeric keypad
Packaging data
Package width	498 mm
Package depth	235 mm
Package height	132 mm
Package weight	3.4 kg
Performance
Market positioning	Proven productivity
Motherboard chipset	Intel Q670
Password protection type	BIOS, Power on
Product type	Mini PC
Trusted Platform Module (TPM) version	2.0
Password protection
Trusted Platform Module (TPM)
Ports & interfaces
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 2x2 Type-C ports quantity	1
DisplayPorts quantity	2
DisplayPort version	1.4
HDMI ports quantity	1
HDMI version	2.1
Ethernet LAN (RJ-45) ports	1
Combo headphone/mic port
Microphone in
Power
Power supply	90 W
Power supply input voltage	100 - 240 V
Power supply input frequency	50/60 Hz
Processor
Processor manufacturer	Intel
Processor family	Intel® Core™ i5
Processor generation	Intel® Core™ i5 (14th gen)
Processor model	i5-14400T
Processor cores	10
Processor threads	16
Processor boost frequency	4.5 GHz
Performance cores	6
Efficient cores	4
Performance-core Max Turbo Frequency	4.5 GHz
Efficient-core Max Turbo Frequency	3.2 GHz
Performance-core base frequency	1.5 GHz
Efficient-core base frequency	1.1 GHz
Processor cache	20 MB
Processor cache type	L3
Processor base power	35 W
Maximum turbo power	82 W
Processor special features
Intel® Turbo Boost Technology
Software
Operating system installed	Windows 11 Pro
Storage
Total storage capacity	512 GB
Storage media	SSD
Number of storage drives installed	1
Total SSDs capacity	512 GB
Number of SSDs installed	1
SSD capacity	512 GB
SSD interface	PCI Express
SSD form factor	M.2
Optical drive type
NVMe
Supplier features
Manufacturer warranty	1 year (1/1/1) limited warranty includes 1 year of parts, labor and on-site repair. Terms and conditions vary by country. Certain restrictions and exclusions apply.
Sustainability
Sustainability certificates	ENERGY STAR, EPEAT, TCO
Sustainability compliance
Technical details
General Product Safety Regulation (GPSR) URL	https://support.hp.com/us-en/document/ish_6126692-6126777-16?openCLC=true
Weight & dimensions
Width	177 mm
Depth	175 mm
Height	177 mm
Weight	1.42 kg

The HP Pro Mini 400 G9 is a compact Mini-PC designed for commercial use, featuring professional performance, integrated security functions, and flexible connectivity options. Equipped with an Intel® Core™ i5-14400T processor, 16 GB DDR5-SDRAM, and a 512 GB NVMe-SSD, it provides sufficient computing power and fast memory access for office applications, data processing, and light multimedia tasks. The device is designed for small and medium-sized enterprises as well as established organizations requiring a reliable, space-saving desktop computer.

Applications
This Mini-PC is ideal for workspaces with limited space, such as retail environments, call centers, offices, or industrial settings. Thanks to its compact design, it can be mounted under a desk or placed on a shelf. The integrated Wi-Fi 6E (802.11ax) technology enables a stable, fast wireless connection even in crowded networks, making it suitable for mobile or decentralized work environments. Support for Bluetooth 5.3 enhances connectivity with peripheral devices such as keyboards, mice, or headsets.

Features and Specifications in Detail
The i5-14400T processor features 10 cores (6 performance cores and 4 efficient cores) and 16 threads, with a maximum turbo frequency of 4.5 GHz for the performance cores. The base frequency is 1.5 GHz (performance cores) and 1.1 GHz (efficient cores). The processor includes a 20 MB L3 cache and a base power consumption of 35 W, with a maximum turbo power of 82 W. The integrated graphics solution Intel UHD Graphics 730 is sufficient for daily office and multimedia use. The memory consists of a 16 GB DDR5-SDRAM module (4800 MT/s) installed in one of the two available DIMM slots. The maximum memory capacity is 64 GB, with only one module currently installed.

Technical Details Explained
The 512 GB SSD is in M.2 form factor with PCIe interface and NVMe support, ensuring fast boot and access times. The 90 W power supply operates with an input voltage range of 100–240 V and a frequency of 50/60 Hz, enabling worldwide use. The device is equipped with a Trusted Platform Module (TPM) 2.0, providing hardware-based security for passwords, encryption, and authentication. Additionally, BIOS and power-on password protection are integrated to prevent unauthorized access.

Compatibility and Accessories
The HP Pro Mini 400 G9 supports the operating system Windows 11 Pro, optimized for business environments. Connectivity includes two USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports, three USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports, one USB 3.2 Gen 2x2 Type-C port, two DisplayPort 1.4 ports, one HDMI 2.1 port, one Ethernet LAN port (RJ-45), and a combined headphone/microphone jack. The Flex ports allow for individual configuration, such as HDMI, DisplayPort, VGA, serial ports, or additional USB ports. Expandability is supported by a 6,3 cm ( 2,5 inch ) expansion bay.

Mounting and Installation
The device is designed as a Mini-PC and can be placed on a desk or mounted on a wall. Installation is performed via pre-installed Windows 11 Pro, with setup supported by the HP Support Assistant software. Power supply is provided by an external power adapter included with the device.

Operational Advantages
The HP Pro Mini 400 G9 features quiet operation, achieved through the HP Run Quiet design. The fans are tuned to operate quietly while providing efficient cooling. The device is also tested according to MIL-STD 810 and HP Total Test Process, ensuring high reliability and longevity. The use of a highly efficient power supply and packaging made from molded pulp highlights the focus on sustainability. The integrated HP Wolf Security for Business provides hardware-based, continuously active protection against modern threats, operating from BIOS to browser.