Detailed Technical Specifications

Product Information

• Product Name: HP ProDesk 400 G4 Desktop Mini
• Model: ProDesk 400 G4
• Brand: HP
• Series: ProDesk (Business Desktop Series)
• Category: Small Form Factor Business Desktop
• Release Year: 2018
• Form Factor: Mini Tower/Small Form Factor
• Dimensions: 11.02 x 3.66 x 11.42 inches (280 x 93 x 290 mm)
• Weight: Starting at 7.94 lbs (3.6 kg)

Processor (CPU)

• Model: Intel Pentium Gold G5400
• Cores/Threads: 2 cores, 4 threads
• Base Frequency: 3.7 GHz
• Cache: 4MB Intel Smart Cache
• Socket: LGA 1151
• TDP: 54W
• Architecture: Coffee Lake (14nm)
• Intel Technologies: Hyper-Threading, Virtualization Technology (VT-x)
• Processor Generation: 8th Generation Intel

Memory (RAM)

• Capacity: 8GB DDR4 (as configured)
• Type: DDR4-2666 (non-ECC, unbuffered)
• Slots: 2x DDR4 UDIMM slots
• Maximum Supported: Up to 32GB (2x16GB)
• Memory Technology: Dual-channel capable
• Speed: 2666MHz (supports 2400MHz and 2666MHz modules)

Storage

• Primary Storage: 500GB 7200RPM SATA HDD
• Interface: SATA 6Gb/s
• Form Factor: 3.5-inch
• Storage Bays:
  • 1x 3.5-inch internal bay (occupied)
  • 1x 2.5-inch internal bay (available)
  • 1x M.2 slot (for SSD, PCIe NVMe or SATA)
• Optical Drive: Optional SATA DVD-Writer

Graphics

• Integrated Graphics: Intel UHD Graphics 610
• Base Frequency: 350 MHz
• Max Dynamic Frequency: 1.05 GHz
• Video Memory: Shared system memory
• Max Resolution: 4096x2304 @ 60Hz (HDMI)
• DirectX Support: DirectX 12
• OpenGL Support: OpenGL 4.5
• Display Outputs: Supports up to 3 independent displays

Operating System

• Pre-installed: Windows 10 Pro 64-bit
• Recovery: HP Cloud Recovery, HP Recovery Manager
• Windows Features: BitLocker, Remote Desktop, Group Policy, Domain Join
• Upgrade Path: Eligible for Windows 11 Pro upgrade (with possible hardware limitations)

Connectivity

• Ethernet: Intel I219-LM Gigabit Ethernet (10/100/1000)
• Wireless: Intel Dual Band Wireless-AC 9560 (802.11ac, 2x2) + Bluetooth 4.2
• Wake-on-LAN: Supported
• PXE Boot: Supported

Front Panel Ports

• USB 3.1 Gen 1: 2x (Type-A, 5 Gbps)
• Audio: 1x headphone/microphone combo jack
• Optical Drive: Optional (if configured)
• Power Button: With LED indicator
• Hard Drive Activity LED: Yes

Rear Panel Ports

• USB 3.1 Gen 1: 4x (Type-A, 5 Gbps)
• USB 2.0: 2x (Type-A, 480 Mbps)
• DisplayPort: 1x (version 1.2)
• VGA: 1x (for legacy display support)
• HDMI: 1x (version 1.4)
• Audio: 3x jacks (line-in, line-out, microphone)
• Ethernet: 1x RJ-45 (Gigabit)
• Serial Port: Optional (requires bracket)
• PS/2: Optional combo port (requires bracket)

Expansion Slots

• PCIe Slots:
  • 1x PCIe x16 (Gen 3.0) slot (for dedicated graphics card)
  • 1x PCIe x1 (Gen 3.0) slot
• M.2 Slot: 1x (for SSD, 2280/2260/2242 form factors)
• Drive Bays:
  • 1x 3.5-inch internal (occupied by HDD)
  • 1x 2.5-inch internal (available)
  • 1x 5.25-inch external (optional optical drive)

Audio

• Audio Codec: Realtek ALC221
• Channels: 5.1 channel support
• Audio Software: DTS Studio Sound
• Internal Speaker: System beep speaker only

Power Supply

• Type: Internal power supply
• Wattage: 180W (standard) or 310W (with dedicated graphics)
• Efficiency: 80 PLUS Bronze certified
• Input Voltage: 100-240V AC, 50-60Hz
• Power Cord: Included (region specific)

Security Features

• TPM: TPM 2.0 embedded security chip
• Chassis Lock: Kensington lock slot
• Chassis Intrusion Switch: Tamper detection
• BIOS Security: Password protection, secure boot
• HP Security Features: HP Sure Start, HP Sure Run, HP Sure Recover
• Cable Lock Slot: Kensington lock compatible

Software & Management

• Pre-installed Software: HP Support Assistant, HP BIOS Configuration Utility, HP Client Security Manager
• Management: HP Manageability Integration Kit, Intel Active Management Technology (vPro optional)
• Remote Management: Compatible with HP Manageability Center
• Cloud Management: HP Device as a Service (DaaS) ready

Chassis & Design

• Chassis Type: Mini Tower/Small Form Factor
• Tool-less Design: Easy access side panel
• Ventilation: Multiple ventilation points with dust filters
• Color: Business black
• Build Quality: Commercial-grade components

Environmental Specifications

• Operating Temperature: 50°F to 95°F (10°C to 35°C)
• Storage Temperature: -40°F to 140°F (-40°C to 60°C)
• Relative Humidity: 20% to 80% (non-condensing)
• Altitude: Up to 10,000 feet (3,048 meters)
• Acoustic Noise: 35 dBA typical (idle)

Warranty & Support

• Standard Warranty: 3-year limited parts, labor, and onsite service
• Support Hours: Business hours (extended available)
• Onsite Service: Next business day (in supported locations)
• Software Support: 30 days from date of purchase

Certifications & Compliance

• ENERGY STAR 8.0 certified
• EPEAT Silver registered
• RoHS compliant
• WEEE compliant
• FCC Class B certified
• CE Marking
• WHQL certified

What's in the Box

• HP ProDesk 400 G4 Desktop Mini
• Power Cord
• Documentation Kit
• Warranty Card
• VGA Cable (optional, depending on configuration)

Performance & Usage

• Target Use: General office productivity, business applications, point-of-sale, light multitasking
• Recommended For: Office workers, reception desks, educational institutions, call centers
• Not Recommended For: Gaming, video editing, 3D rendering, intensive computational tasks
• Upgrade Potential: Good - RAM, storage, and GPU can be upgraded

Processor Comparison Context

• Pentium Gold G5400 vs. Core i3: Lower cache, fewer features, but good for basic tasks
• Performance Class: Entry-level business processor
• Energy Efficiency: Good performance per watt for office environments

Important Notes & Limitations

• Integrated graphics suitable for office applications only, not for gaming or CAD
• Storage can be upgraded to SSD for significantly better performance
• RAM is user-upgradeable via two accessible slots
• Limited power supply may restrict high-end GPU upgrades
• Small form factor limits expansion card sizes
• Windows 11 upgrade may require TPM 2.0 enablement in BIOS
• For heavy multitasking, consider upgrading to 16GB RAM
• Business-focused features may not be relevant for home users
• 3-year warranty is standard for business desktops