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Compact silver mini desktop box, small square footprint, front power button and ports, rear connectivity panel

HP

HP Pro 400 G9 Mini PC i3-13100T 8GB DDR4 2TB NVMe Wi-Fi 6E Windows 11 Pro

SKU CH-9HTP-CGHZ1

A compact Mini PC with a quad-core Intel Core i3-13100T up to 4.2 GHz, 8 GB DDR4, 2 TB NVMe storage, Wi-Fi 6E and Windows 11 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core
  • Memory size8 GB DDR4
  • Storage drive2 TB
  • GraphicsIntel UHD Graphics
  • CPUIntel Core i3-13100T
  • Compact Mini PC fits tight spaces at 17.7 x 17.5 x 3.4 cm
  • Quad-core i3-13100T reaches 4.2 GHz turbo for responsive daily tasks
  • 8 GB DDR4 memory keeps multiple apps running smoothly
  • 2 TB NVMe SSD provides fast boot and ample storage
  • Wi-Fi 6E and Gigabit Ethernet give flexible, reliable connectivity

Compact desktop for everyday tasks

The HP Pro 400 G9 Mini PC fits on any desk at just 17.7 x 17.5 x 3.4 cm. An Intel Core i3-13100T processor with four cores runs at 2.5 GHz base and 4.2 GHz turbo. 8GB DDR4 memory and a 2TB NVMe drive handle documents, web apps and light media work. Windows 11 Pro is pre-installed.

Quiet operation and modest power draw

A 90 W power supply feeds the system, keeping energy use low for daily office hours. Integrated Intel UHD Graphics produces no separate fan noise. The small chassis relies on passive airflow for typical workloads. Gigabit Ethernet and Wi-Fi 6E (802.11ax) connect without adding audible components.

Steps up from older small-form PCs

This unit replaces ageing mini desktops that still use mechanical drives or slower dual-core chips. The jump is worth it when boot speed and snappy multitasking matter more than discrete graphics power. Buyers who need a second video card or more than 8GB RAM should look elsewhere.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $782.99
Pricier than about 68% of the 14,711 comparable items (median $494.99).
Memory size 8 GB DDR4
Lower than about 80% of the 5,840 comparable items (median 16 GB).
RAM capacity 8 GB DDR4
Lower than about 80% of the 13,125 comparable items (median 16 GB).

Specifications

Product
Brand nameHP
Model namePro 400 G9
Part numberDT5A8UA#ABA
Product typeStudent / Home Office
Recommended useConsumer
Processor
ProcessorIntel Core
CPUIntel Core i3-13100T
Turbo clock speed4.2 GHz
Memory
Memory size8 GB DDR4
RAM capacity8 GB DDR4
RAM type and speedDDR4 3200
Memory configuration8 GB x 1
Total memory slots2
Free memory slots1
Memory slots1/2
Max supported RAM64 GB
Storage
Storage drive2 TB
SSD storage2 TB
Hard driveNo
Storage configuration2 TB NVMe SSD
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsIntel UHD Graphics
GPU modelIntel UHD Graphics
GPU interfaceIntegrated video
Audio & video
SoundSound card - Integrated
Connectivity
Wi-Fi standardWi-Fi 6E
Network speed10/100/1000 Mbit/s
Wired networkGigabit Ethernet
Wireless adapterWi-Fi 6E (802.11ax)
Ethernet controllerIntegrated
Wi-Fi802.11ax Wireless LAN
Bluetooth support5.3
Ports & slots
Front USB ports3
Front audio jacks1
Video connectors1 x HDMI, 2 x DisplayPort
Rear USB ports3
Ethernet port1 port
Power
Power supply90 W
Size & build
Overall dimensions6.89 × 6.97 × 1.34 in
Product weight3.13 lb (1.42 kg)
Compatibility
Windows 11 supportReady
In the box
Included monitorNot included
Bundled mouseWired Mouse
Pointing deviceWired Mouse
Software
Operating systemWindows 11 Pro
More details
KeyboardWired Keyboard
Keyboard typeWired Keyboard

Questions about this item

How do I install the DDR4 memory in the HP Pro 400 G9 Mini, and what step is often missed?

Open the chassis, align the DDR4 SO-DIMM notch with the slot key, press firmly until the retention clips click, then verify 8GB appears in BIOS before closing the case.

What maintenance or replacement will the 2TB NVMe SSD need over time?

The NVMe SSD has no moving parts; keep firmware updated via HP Support Assistant and monitor SMART health — replace only if wear-level indicators approach end-of-life thresholds.

Which limit appears first during sustained loads on the 90W power supply and i3-13100T?

The 90W adapter caps total system draw, so the CPU will throttle from its 4.2GHz turbo to stay within the power budget before thermal limits are reached.

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