The HP Pro Mini 400 provides users with the commercial-grade performance, security, and the flexible deployment capabilities needed for small, varied workspaces. This reliable, ultra-small PC is powered to handle mainstream enterprise and SMBs with an Intel® processor[2] and protected with always-on security you can trust.
Latest Intel® processor
Accomplish everything from minor tasks to complex projects with the latest Intel® processor.[2]
Flex ports for easy expansion
Configure or expand your Mini your way with flex ports for legacy or clean desk connectivity.
Protected by HP Wolf Security
HP Wolf Security for Business creates a hardware-enforced, always-on, resilient defense.[4]
Help protect our shared future
A high-efficiency power supply and molded-pulp packaging6 help reduce the impact on the environment.[6]
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Find the relevant information and ideas you need to power your own ingenuity. Copilot in Windows 11 can deliver answers that are more relevant to you**.
recommended accessories
Windows 11
Work anywhere without compromising on performance or security with Windows 11 powered by HP's collaboration and connectivity technology.
Security is your top priority
The HP Wolf Pro Security Edition provides preconfigured enterprise-level PC protection for small and medium sized businesses.[1]
Automatic recovery from firmware attacks
Firmware attacks can completely devastate your PC. Stay protected with HP’s self-healing BIOS - HP Sure Start Gen7 automatically recovers the BIOS from malware, rootkits, or corruption.
Work without interruption
Keep productivity high and downtime low with the fully integrated and automated features of the HP BIOSphere Gen6 firmware ecosystem. Your PCs have extra protection thanks to automatic updates and security checks.[3]
Browse confidently
Help protect your PC from websites and read only Microsoft Office and PDF attachments with embedded malware, ransomware, or viruses with hardware-enforced security from HP Sure Click.[5]
Erase your drive
HP Secure Erase removes the contents of a hard drive for repurposing or reassignment.[6]
Simple PC management
Spend less time and get right to the updates you need with HP Support Assistant.[7]
Speed up the basics of IT management
The HP Manageability Integration Kit helps speed up image creation and management of hardware, BIOS, and security through Microsoft System Center Configuration Manager.[8]
Intel® Core™ i3-13100T (up to 4.2 GHz with Intel® Turbo Boost Technology, 12 MB L3 cache, 4 cores, 8 threads)[6,7]
Chipset
Intel® Q670 (vPro®)
Graphics
Integrated: Intel® UHD Graphics 730
Memory
8 GB DDR4-3200 MHz RAM (1 x 8 GB)
Memory slots
2 DIMM
Hard drive
256 GB PCIe® NVMe™ SSD
Wireless technology
Intel® Wi-Fi 6E AX211 (2x2) and Bluetooth® 5.3 wireless card
Power supply
90 W external power adapter, up to 89% efficiency, active PFC
External I/O Ports
Front : 1 headphone/microphone combo; 1 SuperSpeed USB Type-A 10Gbps signaling rate; 1 SuperSpeed USB Type-A 10Gbps signaling rate (charging); 1 SuperSpeed USB Type-C® 20Gbps signaling rate Rear : 1 power connector; 1 RJ-45; 1 SuperSpeed USB Type-A 10Gbps signaling rate; 2 SuperSpeed USB Type-A 5Gbps signaling rate; 2 DisplayPort™ 1.4; 1 HDMI 2.1
Expansion slots
1 M.2 2230; 1 M.2 2280
1 M.2 slot for WLAN and 1 M.2 2280 slot for storage.
Energy efficiency
EPEAT® registered
ENERGY STAR® certified
Audio Features
Realtek ALC3252 codec, universal audio jack with CTIA and OMTP headset support
Form factor
Mini
Pointing device
HP 125 Wired Mouse
Keyboard
HP Wired Desktop 320K Keyboard
Dimensions (W X D X H)
6.97 x 6.89 x 1.34 in
Weight
3.13 lb
Warranty
3 year (3/3/3) limited warranty includes 3 years of parts, labor and on-site repair. Terms and conditions vary by country. Certain restrictions and exclusions apply.
Support Service Included
HP 3 Year Onsite Next Business Day Desktop Hardware Support.
Software included
HP Notifications; HP PC Hardware Diagnostics UEFI; HP Support Assistant; HP Connection Optimizer; HP Privacy Settings; HP PC Hardware Diagnostics Windows; HP Desktop Support Utilities; HP Easy Clean; Touchpoint Customizer for Commercial; HP Easy Clean Keyboard Driver; HSA Fusion for Commercial; HSA Telemetry for Commercial; HPX for CMIT
Security management
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
Rated 5 out of
5 by
marconi from
Quality you expect from HPQuality you expect from HP
Date published: 2025-06-09
Rated 5 out of
5 by
DrKJ from
Nice compact form and quiet. Plenty of USB ports.Nice compact form. Would like to have an option of ordering without all the HP branded software.
Date published: 2024-09-04
Rated 5 out of
5 by
Leanne99 from
Excellent unit!Great little machine, it's compact, fast, and easy to use. Price is right, too!
Date published: 2024-08-12
Rated 5 out of
5 by
Anonymous from
Mini Pro 400Nice compact unit
Date published: 2024-07-02
Rated 4 out of
5 by
Originaldiscokid from
Love this PCSolid mini computer perfect for most office tasks and light video editing/graphics work. Performance is good and I love the form factor, I install it under my desk for more desktop space. No fans so I have installed a $12 fan under my desk to cool it. This is my second Mini and I'm not sure I'll ever buy another desktop form factor again.
Date published: 2024-06-19
Rated 2 out of
5 by
y2krok00 from
Performance of HP Pro Mini 400 G9I'm pretty disappointed in the HP Pro Mini 400 G's performance.
I don't think that I would consider HP hardware in the near future.
Date published: 2024-05-04
Rated 5 out of
5 by
Bat Joe from
computer works wellGreat computer
Date published: 2024-04-04
Rated 5 out of
5 by
Biegler & Associates Tax from
Tax and RE development made easyEffortless set up with great flexibility
Hello Ricky and thank you for your question! Yes, this HP Pro Mini 400 G9 Desktop PC has an expansion M.2 2280 slot for storage.
Answered by: HP Team Grant
Date published: 2024-06-06
Can I install Ubuntu 24.04 and will all the ports / audio and video work. Looking at these for running our company terminals in our VDI environment.
Asked by: Anonymous
Thank you for your question! This HP Pro Mini 400 G9 Desktop PC ships with Windows 11 Pro. That is the recommended OS for this configuration. For a Customizable HP Pro Mini 400 G9 Desktop PC visit this link: https://www.hp.com/us-en/shop/pdp/hp-pro-mini-400-g9-desktop-pc-customizable-4g4n8av-1-
Answered by: HP Team Grant
Date published: 2024-09-16
Is it wireless or only thru LAN connection?
Asked by: Mark111
Hello, Mark. Thanks for your question. This HP Pro Mini 400 G9 Desktop computer has a wireless connection and an Ethernet connection.
Answered by: HP Team Cheri
Date published: 2024-02-24
Does this PC support dual monitors?
Asked by: LadyI
Hello. Thanks for your question. This HP Pro Mini 400 G9 Desktop PC supports up to three monitors. There are 2 DisplayPort 1.4 ports and 1 HDMI 2.1 port.
Answered by: HP Team Cheri
Date published: 2023-08-27
Is the RAM upgradeable? What is the maximum? Am I correct that it has two memory ports?
Asked by: Shurk
Yes, the RAM on this HP Pro Mini 400 G9 Desktop PC can be upgraded to 64GB of RAM. This will have two slots for RAM.
Answered by: HP Team Grant
Date published: 2023-09-12
Does this come with speakers built in, like can I hear audio out of it? Or will I need to buy external speakers?
Asked by: Icifresh
Hello. Thanks for your question. You would need to buy speakers to hear sound out from this computer.
Answered by: HP Team Cheri
Date published: 2023-07-27
IS THERE AN ETHERNET PORT
Asked by: jERRY213
Yes, this HP Pro Mini 400 G9 Desktop PC - Wolf Pro Security Edition features an RJ-45 Ethernet Port.
Answered by: HP Team Grant
Date published: 2023-02-27
Hi dear HP team.
I'm wondering if I can buy an HP Pro Mini 400 G9 Desktop PC with an additional network adapter. There are additional HP adapters on sale with product number M74416-001. if not then HP Pro Mini 400 G9 Desktop PC supports M74416-001 ?
Asked by: Mammadzada
For a customizable HP Pro Mini 400 G9 please visit this link: https://www.hp.com/us-en/shop/pdp/hp-pro-mini-400-g9-desktop-pc-customizable-4g4n8av-1-
Click Customize and Buy on that page and the network adapter can be added. Thank you for your question!
HP.com will accept returns or exchanges for this product up to 30 days from the date of delivery. A 15% restocking fee may apply. For details, please visit: https://www.hp.com/us-en/shop/cv/returnsandexchanges.