US
HP

HP ProDesk 400 G9 SFF Business Desktop 32GB

  • Intel Celeron G6900, dual-core, 3.4 GHz, 4MB cache
  • 32 GB DDR4 installed, 64 GB max, 2 slots
  • SSD capacity stated only in the title
  • Up to 3840 x 2160 output via HDMI 1.4 and DisplayPort 1.4
  • USB-C, USB-A, RJ-45, Wi-Fi
  • 11.9 x 10.6 x 3.7 in, under 9 lb, 90 day warranty

Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A compact small form factor office PC with a large RAM allotment, Windows Pro and business security, plus keyboard and mouse. The entry-level dual-core Celeron limits it to light office work.

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ASIN: B0DQVLNB7RCategory: Desktop Computers

Overview

Small offices and home workers who need a tidy business desktop get a slim tower with Windows Pro, TPM security and a wired keyboard and mouse. It drives up to two displays and connects by Ethernet, Wi-Fi and a mix of USB ports.

A small, secure Windows Pro machine for email, documents and browsing is the reason to buy. The large RAM allotment helps with many tabs open. The basic dual-core processor will struggle with heavy spreadsheets, editing or gaming.

Who it's for

Front desks, admin staff and home offices with light workloads will be well served. Creators and power users need a faster processor and dedicated graphics.

Pros and cons

Pros
  • Compact small form factor
  • Windows Pro with TPM and HP Wolf Security
  • Large RAM allotment
  • Dual display output
Cons
  • Entry-level dual-core CPU
  • SSD size only in title
  • Short listed warranty
  • No speakers built in

Performance notes

Speed is set mainly by the two-core processor, so extra RAM helps multitasking but not heavy single tasks. Integrated graphics handle office displays and video playback, not games. The SSD makes boot and app launch quick.

Specifications

BrandHP
Dimensions & fit
Ram Memory Maximum Size64 GB
Item dimensions11.9 x 10.6 x 3.7 inches
Compatibility & installation
RAM Memory Installed32 GB
Hardware Interface1 x USB-C, USB Type-A, 2 x USB 2.0 Type-A, HDMI 1.4, DisplayPort 1.4, RJ-45, headphone/mic combo, audio-out
Warranty & support
Warranty Description90 Days
Other details
Operating SystemWindows 11 Pro
Hard Disk DescriptionPCIe M.2 SSD (up to 2TB configurable)
RAM Memory TechnologyDDR4
Processor BrandIntel
Wireless Compability802.11ac, 802.11ax
Display Resolution Maximum3840x2160
BuiltIn MediaWired keyboard and mouse
CPU Model NumberCeleron G6900, dual-core, 3.4 GHz, 4 MB cache
Memory slots available2
Graphics CoprocessorIntel UHD Graphics
Security featuresTPM 2.0, HP Wolf Security

Frequently asked questions

How do I set up the HP ProDesk 400 G9 with two monitors?

Connect one monitor by HDMI 1.4 and one by DisplayPort 1.4. It supports dual displays up to 3840 x 2160.

Can I add more RAM to the HP ProDesk 400 G9?

Yes. It ships with 32 GB DDR4 and supports up to 64 GB across 2 slots.

Does the HP ProDesk 400 G9 have Wi-Fi?

Yes, with 802.11ac/ax wireless, plus an RJ-45 Ethernet port.

Is the HP ProDesk 400 G9 good for gaming?

No. It uses a Celeron processor with integrated Intel UHD Graphics, suited to business tasks.