Description
Quick summary: The HP ProOne 400 G4 20″ All-in-One is a professionally refurbished business all-in-one PC with Intel Core i5-8500T with 6 cores / 6 threads, up to 3.5 GHz, 16GB RAM, 512GB SSD and a 19.5″ HD+ (1600 x 900) anti-glare display. Best for: reception desks, offices, schools and cyber cafés.
Overview
The HP ProOne 400 G4 20″ All-in-One (2018) is a business all-in-one PC from HP. This configuration pairs the Intel Core i5-8500T with 16GB RAM and a 512GB SSD. Its 19.5″ HD+ (1600 x 900) anti-glare screen and approx. 5.3 kg weight make it comfortable for long working days. Each unit is professionally refurbished – cleaned, fully tested and ready to use – so you get business-class build quality for far less than a new machine.
Key features
- Processor: Intel Core i5-8500T – 6 cores / 6 threads, up to 3.5 GHz
- Memory: 16GB RAM – upgradeable
- Storage: 512GB SSD – fast boot and app loading
- Display: 19.5″ HD+ (1600 x 900) anti-glare
- Space-saving all-in-one – just one power cable
- 6-core 8th Gen i5 with 16GB RAM and 512GB SSD
- Built-in speakers
HP ProOne 400 G4 20″ All-in-One full specifications
Processor & graphics
| Processor | Intel Core i5-8500T |
|---|---|
| Generation | 8th Gen (Coffee Lake, desktop T-series) |
| Cores / threads | 6 cores / 6 threads |
| Base clock speed | 2.1 GHz |
| Max turbo speed | 3.5 GHz |
| Cache | 9 MB Intel Smart Cache |
| Processor power (TDP) | 35 W |
| Integrated graphics | Intel UHD Graphics 630 |
Memory & storage
| Memory (RAM) | 16GB RAM |
|---|---|
| RAM upgrades | 2x DDR4 SO-DIMM slots (upgradeable to 32GB) |
| Storage | 512GB SSD |
| Storage interface | M.2 / 2.5″ SATA SSD |
Display
| Display | 19.5″ HD+ (1600 x 900) anti-glare |
|---|---|
| Touchscreen | No |
Connectivity & ports
| Wireless | Wi-Fi 5 + Bluetooth (most units) |
|---|---|
| Ports | Side: USB-A 3.1, audio; Rear: 4x USB-A, DisplayPort out, RJ-45 Ethernet |
Camera, audio & input
| Webcam | Integrated pop-up/720p webcam (most units) |
|---|---|
| Keyboard | Keyboard and mouse may vary |
| Security | TPM 2.0 |
Battery & power
| Charger | Integrated / external HP adapter |
|---|
Design
| Weight | approx. 5.3 kg |
|---|---|
| Form factor | Business all-in-one PC |
Software, condition & warranty
| Condition | Professionally refurbished – cleaned, fully tested and ready to use |
|---|
How it compares
How the HP ProOne 400 G4 20″ All-in-One stacks up against similar machines buyers in Kenya often compare it with (all available from Computer Accessories Kenya):
| Model | Processor | RAM / storage | Display | Weight | Stand-out feature |
|---|---|---|---|---|---|
| HP ProOne 400 G4 20″ All-in-One (this item) | Core i5-8500T | 16GB / 512GB SSD | 19.5″ HD+ (1600 x 900) anti-glare | approx. 5.3 kg | Space-saving all-in-one – just one power cable |
| Lenovo IdeaCentre AIO 3 24IMB05 23.8″ All-in-One | Core i5-10500T | 8GB / 256GB SSD | 23.8″ Full HD (1920 x 1080) IPS | approx. 5.6 kg | Big 23.8-inch Full HD IPS screen |
| Lenovo IdeaCentre S4430 23.8″ All-in-One | Core i5 10th Gen | 8GB / 256GB SSD | 23.8″ Full HD (1920 x 1080) | — | Big 23.8-inch Full HD screen |
Verdict: the HP ProOne 400 G4 20″ All-in-One stands out for: Space-saving all-in-one – just one power cable. It is the right pick for reception desks, offices, schools and cyber cafés.
Who it’s for
- Microsoft Office, email and web browsing
- Zoom, Teams and Google Meet calls
- Online classes, research and assignments
- Office, reception, school labs and point-of-sale stations
What’s in the box
- HP ProOne 400 G4 20″ All-in-One computer
- Power adapter / charger
Frequently asked questions
What processor does the HP ProOne 400 G4 20″ All-in-One have and how fast is it?
This unit has the Intel Core i5-8500T, an 8th Gen (Coffee Lake, desktop T-series) chip with 6 cores and 6 threads. It boosts up to 3.5 GHz, with 9 MB of cache.
Can I upgrade the RAM or storage on the HP ProOne 400 G4 20″ All-in-One?
Yes – 2x DDR4 SO-DIMM slots (upgradeable to 32GB). Storage uses M.2 / 2.5″ SATA SSD, so you can fit a larger SSD later.
Who is the HP ProOne 400 G4 20″ All-in-One best for?
Reception desks, offices, schools and cyber cafés. It handles Office, browsing, video calls and online learning with ease; it is not designed for heavy gaming.
What condition is this refurbished unit in?
It is professionally refurbished: cleaned, fully tested and ready to use, so you get a business-grade machine at a fraction of its original price.
Do you deliver in Nairobi and across Kenya?
Yes. Computer Accessories Kenya offers free delivery within Nairobi for orders of up to 5 items, and countrywide delivery to all counties from KSh 500 depending on location. Returns are accepted within 7 days.
Buy the HP ProOne 400 G4 20″ All-in-One in Kenya
Order online from Computer Accessories Kenya (computeraccessories.co.ke) and pay securely at checkout. We offer free delivery within Nairobi for orders of up to 5 items, countrywide delivery from KSh 500 depending on your county, and 7-day returns. Need help choosing? Contact our team before you order.
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