HP ProDesk 400 G4 Mini WLAN Core i5-8400T 1.7

£402.00

Standard Delivery by 14 - 16 OctExpress Delivery by 12 Oct for £12.00

Restored professionally

Based on up to 100-points of inspection

The PhoneMart Promise

Based on up to 100-points of inspection

We measure each battery's health and capacity against strict standards, and replace any that don't make the grade, so you get power you can rely on all day.
The display is switched on and looked over closely for any blemishes, so there are no marks, dust spots or discolouration to spoil the view.
Where a charger is included, the cord and connectors are checked for wear, and the plug is confirmed to fit sockets.
Before it ships, every device gets a thorough professional clean and polish so it feels fresh in your hands.
Every lens is put to work, so we can confirm sharp photos, smooth video and reliable performance on video calls.
A full factory reset wipes the device clean, securely erasing all previous data and restoring the original settings.
Each button is pressed to check it responds straight away and does exactly what it should, from volume to lock to power.
If any parts are fitted during refurbishment, they are tested for compatibility and held to the same standards as the originals.
The moisture indicator inside the device is inspected to rule out any history of water or liquid damage.
Every port, including the headphone, USB and Ethernet connections, is checked to make sure it connects and works reliably.
Face and fingerprint unlock, along with any voice recognition, are tested to make sure they work quickly and accurately.
Positioning is checked for accurate GPS, so maps and location apps behave exactly as they should.
External sensors, such as proximity, brightness, laser measurement and heart rate, are checked for precise and responsive readings.
Screws, casing, frames and other mechanical parts are examined to confirm they are original or quality replacements, and any replacement has to match or beat industry standards.
We confirm that Wi-Fi and Bluetooth connect quickly and hold a stable signal.
Speakers and microphones are inspected and fine tuned so audio records and plays back clearly.
The flash and every indicator light are tested to confirm they light up and work correctly.
Any features that are specific to your device are checked against the same standards, so nothing gets missed.
The keyboard and trackpad are tested key by key and across the whole surface, so typing, clicking and gestures all respond accurately. Any backlighting is checked too.
The cooling fans and air vents are cleaned and inspected, so the device stays quiet and runs at a safe temperature even under heavy use.
Internal components such as the hard drive, SSD and graphics card are checked to confirm every part is present, secure and fully working.

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Visible signs of useVerified partsBattery for daily use

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HP ProDesk 400 G4 Mini WLAN Core i5-8400T 1.7

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HP ProDesk 400 G4 Mini WLAN Core i5-8400T 1.7

Fair
Black/Grey
240 GB

£402.00

14-day returns

Set up the return in just a few clicks in your PhoneMart account.

Send the device back within 14 days of receiving it. Return postage is paid by you unless the item is faulty, damaged or not what you ordered.

Get your cash back within 3 business days of the seller receiving the device.

Proudly refurbished by PhoneMart Privacy policy

Fair-Black/Grey-240 GB

£402.00

Common questions about the HP ProDesk 400 G4 Mini WLAN Core i5-8400T 1.7

Black/Grey

Colour

240 GB

Storage

Yes

Bluetooth

Yes

Ethernet

SFF

Form factor

Intel UHD Graphics 630

Graphics card

UHD Graphics

Graphics card memory type

Hdd storage gb

Hdmi port

For anyone needing a capable desktop that fits neatly on or under the desk, the HP ProDesk 400 G4 Mini from 2019 is a reliable choice. With a small form factor design, it easily slips into tight spaces while delivering solid performance for everyday computing tasks.

The HP ProDesk 400 G4 Mini is powered by an Intel Core i5-8400T six-core processor running at 1.7 GHz with speeds up to 3.3 GHz. This setup keeps your applications responsive, whether you are working on documents, running multiple browser tabs, or managing spreadsheets. Its 256 GB SSD ensures quick boot times and fast file access, while 8 GB of RAM provides smooth multitasking without interruption.

Key features

Processor: Intel Core i5-8400T 1.7 GHz six-core
Memory: 8 GB RAM for multitasking
Storage: 256 GB SSD for fast access
Graphics: Intel UHD Graphics 630 handles standard visuals
Connectivity: Ethernet and WiFi for versatile networking
Bluetooth: Yes for wireless accessories

Who is this for?

The HP ProDesk 400 G4 Mini is well suited to professionals and home users who need a compact desktop for office work, web browsing, and light multimedia tasks. It fits perfectly in environments where space is limited but reliable performance is required, such as small offices or shared workspaces.

This model is also a solid choice for anyone upgrading from an older desktop who wants faster storage and a responsive experience without changing their existing monitors or peripherals, thanks to its Ethernet, WiFi, and USB connectivity.

What you get and what to know

What you get	Good to know
256 GB SSD fast storage for files and apps	Connectivity includes Ethernet and WiFi
8 GB RAM smooth multitasking support	No optical drive fits modern digital workflows
Core i5-8400T six-core processor	No HDMI or VGA ports, USB accessories preferred

Why buy it refurbished?

Buying the HP ProDesk 400 G4 Mini refurbished means you get a device thoroughly inspected by professionals with up to a 100-point quality check. It is factory reset and graded for cosmetic condition, ensuring full functionality and reliability.

Refurbished products come with a 24-month warranty, free delivery, and 14-day returns. Choosing refurbished keeps electronics in use longer and reduces environmental waste, making it a smart and sustainable choice.

ColourBlack/Grey

Storage240 GB

BluetoothYes

EthernetYes

Form factorSFF

Graphics cardIntel UHD Graphics 630

Graphics card memory typeUHD Graphics

Hdd storage gb0

Hdmi portNo

Jack portYes

Memory gb8 GB GB

MicrophoneNo

Optical driveNo

OsWindows

ProcessorCore i5-8400T

Processor brandIntel

Processor core6 core

Processor maximum speed3.3

Processor release year2018

Processor speed ghz1.7 GHz

Sd card slotNo

SeriesProDesk

Ssd storage capacity gb256

Storage gb240 GB

Storage typeSSD

Usba portYes

Usbc portNo

Vga portNo

WebcamNo

Weight1250 g g

WifiYes

Year of release2019

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HP ProDesk 400 G4 Mini WLAN Core i5-8400T 1.7

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What you get and what to know

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