ENERGY STAR | Business
HP Pro Small Form Factor 400 G9 Desktop PC
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Product # 89P53UA#ABA
HP Pro Small Form Factor 400 G9 Desktop PC
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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**.
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]
Powering your creativity
Power through creative applications using discrete graphics.
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.[6]
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 and traditional antivirus can’t always recognize new attacks. Protect your PC against never-before-seen attacks with HP Sure Sense, which uses deep learning AI to provide exceptional protection against advanced malware.
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
The HP Manageability Integration Kit helps speed up image creation and management of hardware, BIOS, and security through Microsoft System Center Configuration Manager.[9]
Technical details
HP Pro Small Form Factor 400 G9 Desktop PC is rated
out of
5 by
29.
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
Rated 1 out of
5
by
HP knowledgeable User from
Stay away from HP
Website description for their hardware is vague enough to mislead you into buying the wrong equipment. Their customer service stinks. You have to wait for hours, then you get bounced around from one person to the next, and none of them are able to resolve your issue. Then you try to return the equipment that did not work for you, and they decide to keep 15% restocking fee, for deficient equipment that you never could use.
Date published: 2024-05-30
Rated 4 out of
5
by
Miss TJ from
New office computer after 20 years.
Took a bit of time getting used to new buttons, etc. with W11. Graphics and speed are great. The DVD is not the same quality as my old computer, but I will be careful. Had to purchase a spliter for two displays, as only one hdmi connection. Very quiet and compact.
Date published: 2024-05-22
Rated 5 out of
5
by
Atrium from
office computer
good for business. has all the high-level security you need and perfect for the office.
Date published: 2024-02-10
Rated 5 out of
5
by
Anonymous from
Great price, great system.
System is compact and lightweight and includes a sufficient amount of ports. Ordering and delivery status monitoring is great!
Date published: 2023-05-10
Rated 5 out of
5
by
Milco wire edm from
owner
great speedy service on the sale
Date published: 2023-01-23
Can I get it with 16 GB of ram and with windows 10
This HP Pro Small Form Factor 400 G9 Desktop PC ships as specified. For a customizable HP Z2 Small Form Factor 400 G9, please visit this link: https://www.hp.com/us-en/workstations/z2-small-form-factor-configure.html?jumpid=va_d08cf5d452
Date published: 2024-02-20
Is the RS232/Serial Com port native or USB based?
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.
Date published: 2024-11-22
Does this computer support multiple monitors via a docking station such as the HP Thunderbolt Dock 120W G4?
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.
Date published: 2025-03-27
I see it states that up to 3 monitors, but I noticed on note below that states "optional" Can you clarify? (Copied: [3] Two standard video ports included with an optional third flex port configurable at the time of purchase.)
This HP Pro Small Form Factor 400 G9 Desktop PC shows as having one HDMI and two DisplayPorts on the rear of the PC. This has the optional 3rd flex port installed. Thank you for your question!
Date published: 2024-05-28
I want the "HP Pro Small Form Factor 400 G9 Desktop PC" but the hard drive is way too small can I modify this product and which specific hard drive you replace it with I.E. product name and read and write speeds? Would the PSU have to be changed?
Yes, this HP Pro Small Form Factor 400 G9 Desktop PC has an expansion slot for an M.2 2280 slot for an SSD. No PSU upgrade will be needed for a second hard drive.
Date published: 2023-06-21
Can a Creative Sound Blaster be added to this? How many PCIe slots are available?
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.
Date published: 2024-12-16
PRodesk 400 SFF G9, Support PCIe NMVe QLC SSD?
This HP Pro Small Form Factor 400 G9 supports the following SSD options:
256 GB PCIe 4x4 2280 NVMe TLC SSD
256 GB PCIe 4x4 2280 NVMe OPAL 2 Self-Encrypted (SED) TLC SSD
512 GB PCIe 4x4 2280 NVMe OPAL 2 Self-Encrypted (SED) TLC SSD
512 GB PCIe 4x4 2280 NVMe TLC SSD
1 TB PCIe 4x4 2280 NVMe TLC SSD
2 TB PCIe 4x4 2280 NVMe TLC SSD
Date published: 2023-05-27
does this device have wi-fi and Bluetooth adapters?
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.
Date published: 2025-04-15
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Return and exchange information
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.
