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HP Pro Small Form Factor 400 G9 Desktop PC

ENERGY STAR | Business

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Product # AJ5B5UA#ABA
  • Windows 11 Pro
  • Intel® Core™ i7-14700 (up to 5.4 GHz with Intel® Turbo Boost Technology, 33 MB L3 cache, 20 cores, 28 threads)
  • 16 GB memory; 512 GB SSD storage
  • Intel® UHD GraphicsSee all Specs

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Included

    • Remote problem diagnosis and support
    • Onsite support wherever work happens
    • Faster tech support
    • Predictive AI-powered insights and proactive onsite support
    • End user alerts and automated IT ticketing
    • Remote problem diagnosis and support
    • Onsite repair or replacement, anywhere work happens

    Service starts on date of hardware purchase. Restrictions and limitations apply.

    The HP Pro SFF 400 Desktop provides users in hybrid work environments with the commercial-grade configuration options and connectivity in a space-saving design. This PC is powered by the latest Intel® processor[2] and protected with always-on security you can trust.

    Expansion bays and slots

    The HP Pro SFF 400 has an m.2 slot for WLAN and one for storage, one PCIe x16 slot, and one PCIe x1 slot.

    Connect up to 3 displays

    Increase productivity and tackle a range of workflows with video ports supporting up to three displays.[3]

    Protected by HP Wolf Security

    HP Wolf Security for Business creates a hardware-enforced, always-on, resilient defense.[6]

    Help protect our shared future

    A high-efficiency power supply and molded-pulp packaging9 help reduce the impact on the environment.[9]

    Copilot in Windows 11 - Get answers, inspiration, and summaries.

    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.

    Features

    Windows 11

    Work anywhere without compromising on performance or security with Windows 11 powered by HP's collaboration and connectivity technology.

    Latest Intel® multi-core processor 

    Configure your HP Pro SFF 400’s CPU for the perfect combination of power, snappy performance, and value. With the latest Intel® processor and DDR5 memory, handle multiple work tasks smoothly and reliably.

    Security is your top priority

    The HP Wolf Pro Security Edition provides preconfigured enterprise-level PC protection for small and medium sized businesses.[1]

    BIOS management over the network

    HP Sure Admin, a modern BIOS management tool, eliminates the need for a password or BIOS configuration utility in the OS by creating a digital signature that allows IT administrators to securely manage BIOS settings over a network.[4]

    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]

    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.

    HP Sure Sense

    Malware is evolving rapidly beyond traditional antivirus capabilities. Protect your PC against never-before-seen attacks with HP Sure Sense, which combines behavioral analysis with advanced AI techniques to provide exceptional protection.

    Erase your drive

    HP Secure Erase removes the contents of a hard drive for repurposing or reassignment.[7]

    Simple PC management

    Spend less time and get right to the updates you need with HP Support Assistant.[8]

    Speed up the basics of IT management

    Deploy the HP Manageability Integration Kit to help speed up image creation and the management of hardware, BIOS, and security when managing devices through Microsoft Endpoint Manager.[10]

    Technical Specs

    Operating system

    Windows 11 Pro

    Processor

    Intel® Core™ i7-14700 (up to 5.4 GHz with Intel® Turbo Boost Technology, 33 MB L3 cache, 20 cores, 28 threads)[6,7]

    Processor technology

    Intel® vPro® Technology

    Chipset

    Intel® Q670

    Graphics

    Integrated: 
    Intel® UHD Graphics

    Memory

    16 GB DDR5-4800 MT/s (1 x 16 GB)

    Memory slots

    2 DIMM

    Hard drive

    512 GB PCIe® Gen4 NVMe™ TLC M.2 SSD

    Optical drive

    HP 9.5 mm Slim DVD-Writer

    Network interface

    Intel® I219-LM GbE

    Power supply

    240 W internal power supply, up to 92% efficiency, active PFC

    External I/O Ports

    Front : 1 headphone/microphone combo
    1 SuperSpeed USB Type-C® 10Gbps signaling rate
    3 SuperSpeed USB Type-A 10Gbps signaling rate
    Rear : 1 audio-out
    1 power connector
    1 RJ-45
    1 HDMI 1.4
    3 SuperSpeed USB Type-A 5Gbps signaling rate
    1 DisplayPort™ 1.4
    2 USB Type-A 480Mbps signaling rate
    1 DisplayPort™

    Expansion slots

    1 M.2 2230
    1 M.2 2280
    1 PCIe 3 x1
    1 PCIe 4 x16
    1 M.2 2230 slot for WLAN or storage and 1 M.2 2280 slot for storage.[11]

    Energy efficiency

    EPEAT® registered
    ENERGY STAR® certified

    Audio Features

    Realtek ALC3252 codec, universal audio jack with CTIA and OMTP headset support

    Form factor

    Small form factor

    Pointing device

    HP 125 Wired Mouse

    Keyboard

    HP Wired Desktop 320K Keyboard

    Dimensions (W X D X H)

    10.6 x 3.7 x 12.1 in

    Weight

    9.25 lb

    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.

    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
    Absolute Persistence module
    HP Sure Admin
    HP Tamper Lock
    HP Sure Start Gen7
    HP Sure Sense2

    Security software license

    HP Wolf Pro Security Edition (1 year)

    Reviews and Q&A

    HP Pro Small Form Factor 400 G9 Desktop PC is rated 2.5 out of 5 by 2.
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    Rated 1 out of 5 by Anonymous from Do not buy Dissatisfied
    Date published: 2025-10-14
    Rated 4 out of 5 by Reviewer J from HP Pro SFF 400 G9 Desktop PC Review The best thing I like about this PC is the improvement in the speed of the performance of the whole range of actions requested, so far. Given that this is a compact PC, it would nevertheless be a lot easier to work with it if the spacing of the USB drive openings were a little further apart and especially if the labels or wording on the PC were larger and more easily readable.
    Date published: 2024-11-15
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    Does this computer support multiple monitors via a docking station such as the HP Thunderbolt Dock 120W G4?

    Asked by: NikkiJN
    Thank you for your question! No, this HP Pro Small Form Factor 400 G9 Desktop PC will not support external docks. This HP Pro Small Form Factor 400 G9 Desktop PC has 2 DisplayPorts for external displays and an HDMI port for a total of 3 support displays.
    Answered by: HP Team Grant
    Date published: 2025-03-27

    Does this product have an open Hard Drive Bay?

    Asked by: PaulTV
    Thank you for your question! No, the HP Pro Small Form Factor 400 G9 Desktop PC has no expansion for an HDD or SSD.
    Answered by: HP Team Grant
    Date published: 2025-10-05

    Am I correct that some 400 G9 series of Desktop PCs have WiFi and/or Bluetooth cards that the user can remove?

    Asked by: PSSnyder
    Thank you for your question! The HP Pro Small Form Factor 400 G9 Desktop PC has an M.2 2230 expansion slot for WLAN.
    Answered by: HP Team Grant
    Date published: 2025-01-06

    Is the RS232/Serial Com port native or USB based?

    Asked by: Francesco1
    Thank you for your question! This HP Pro Small Form Factor 400 G9 Desktop PC has the following ports: Front : 1 headphone/microphone combo; 1 SuperSpeed USB Type-C® 10Gbps signaling rate; 3 SuperSpeed USB Type-A 10Gbps signaling rate Rear : 1 audio-out; 1 power connector; 1 RJ-45; 1 HDMI 1.4; 3 SuperSpeed USB Type-A 5Gbps signaling rate; 1 DisplayPort™ 1.4; 2 USB Type-A 480Mbps signaling rate 1 DisplayPort™ An RS232 port is not mentioned as a port on this PC.
    Answered by: HP Team Grant
    Date published: 2024-11-22

    Can a Creative Sound Blaster be added to this? How many PCIe slots are available?

    Asked by: SPurk
    Thank you for your question! The HP Pro Small Form Factor 400 G9 Desktop PC is a Small Form Factor PC and will not be compatible with standard-size cards. This HP Pro Small Form Factor 400 G9 Desktop PC has 1 PCIe 3 x1 and 1 PCIe 4 x16 expansion slots.
    Answered by: HP Team Grant
    Date published: 2024-12-16

    does this device have wi-fi and Bluetooth adapters?

    Asked by: MikeAlliance
    Hello. Thanks for your question. The HP Pro Small Form Factor 400 G9 Desktop (AJ5B4UA) does not include built-in Wi-Fi or Bluetooth. However, it features an M.2 (2230) slot for WLAN, allowing you to install a compatible Wi-Fi/Bluetooth card if needed. Alternatively, you can use a USB Wi-Fi and/or Bluetooth adapter for wireless connectivity.
    Answered by: HP Team Cheri
    Date published: 2025-08-04

    The picture indicates a RS232 port. Does this computer actually come with a RS232 port?

    Asked by: Chad321
    Thank you for your question! No, this HP Pro Small Form Factor 400 G9 Desktop PC has the following ports: Front : 1 headphone/microphone combo; 1 SuperSpeed USB Type-C® 10Gbps signaling rate; 3 SuperSpeed USB Type-A 10Gbps signaling rate Rear : 1 audio-out; 1 power connector; 1 RJ-45; 1 HDMI 1.4; 3 SuperSpeed USB Type-A 5Gbps signaling rate; 1 DisplayPort™ 1.4; 2 USB Type-A 480Mbps signaling rate 1 DisplayPort
    Answered by: HP Team Grant
    Date published: 2025-02-06

    Hi, would this desktop have the ability to have a GPU card added along with 25TB of external storage attached in some high speed accessible fashion. -thanks

    Asked by: cubg1
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    Return and exchange information
    Most items may be returned within 30 days of delivery. A restocking fee of up to 15% of the purchase price may be deducted from your refund for returned items, except where prohibited by law. No restocking fee applies to defective or incorrect items. A restocking fee is not applicable for printers, ink, toner, paper, care packs, software and services. For details, please visit: https://www.hp.com/us-en/shop/cv/returnsandexchanges.
    Country/Region :   United States