Castle
Castle Front View
Expansion Modules
Modular Internal Architecture
Side Profile
🛡️ GUARDIAN MISSION
Castle guards against: Data theft, corporate surveillance, privacy invasion, cloud dependency, and loss of digital sovereignty.
Private AI Hub
Local AI processing hub that powers the entire Guardian ecosystem. All intelligence happens in your home—zero cloud dependency. Modular architecture scales from single user to enterprise. Your data, your control, your AI.
Your GUARDIAN for Life, Guarding Your Health, Data, Environment, Life.
The brain of the Guardian ecosystem
Castle Front View
Expansion Modules
Modular Internal Architecture
Side Profile
Home, Pro, Medical, Enterprise—modular scaling
Single user, personal deployment
Power users, 2-10 users
HIPAA-compliant healthcare
10-1000+ users, custom config
The intelligence core for privacy-first AI
Devices are lightweight mirrors—sensors and displays. Castle is the mind. When AI improves, you upgrade Castle. All mirrors instantly benefit. Interfaces last years. Intelligence evolves monthly.
Monitor Cast turns any display into a workstation
Walk up to any monitor in your home. Voice command: "Voyager, activate workstation." Monitor Cast connects wirelessly. Keyboard/mouse pair via Bluetooth. Full desktop computing—no PC needed.
Eliminates $800-2,000 desktop PC purchase. Multiple workstations throughout home without multiple computers. One Castle = bedroom office + kitchen display + living room entertainment.
Castle runs 24/7. No boot time. Instant workstation activation at any display. Same files, apps, settings everywhere. Walk between rooms without closing work.
Upgrade one Castle instead of multiple PCs. Single point of backup and security. Software updates propagate to all displays. Lower total cost of ownership.
Productivity:
• Web browsing (full desktop browsers)
• Office suite (docs, sheets, presentations)
• Email and communications
• File management and cloud sync
Creative Work:
• Photo/video editing
• Graphic design
• Software development
• Media consumption (streaming, music)
Upgrade components without replacing entire Castle
Plug-in processor upgrades without replacing motherboard. Ryzen 7 → Ryzen 9 → future generations. Investment protection as computing needs grow.
Add dedicated graphics for AI acceleration, video editing, gaming. RTX 4070 → 4090 → next-gen. Hot-swappable without full rebuild.
Hot-swappable drive bays. Add capacity as photo/video library grows. 2.5" and 3.5" drives supported. RAID configurations for redundancy.
Standard DIMM slots, expandable to 128GB. Start with 32GB, add more as workflows demand. No proprietary RAM required.
Optional 10GbE, Wi-Fi 6E, additional Ethernet ports. Scale connectivity as smart home grows. Plug-in network upgrades.
Specialized NPU/TPU modules for AI workload optimization. Google Coral, Hailo-8, future accelerators. Stay current with AI hardware evolution.
Start with Home Tier ($899). Add GPU module when you need video editing. Expand storage as family grows. Upgrade CPU when AI models demand more power. Modular investment > replacing entire systems.
From single user to enterprise deployment
Production-ready hardware with complete BOM
Retail: $899 | BOM: $600-700 | Gross Margin: 22-33% | AI Capacity: 1-13B parameter LLMs | Bitcoin Node: 10GB lightweight
TPM 2.0: FIDO2 biometric keys + Bitcoin private keys | Self-Encrypting SSD: TCG Opal | Tamper-Resistant: IP54 aluminum enclosure | Compliance: HIPAA/SOC2-ready
Why Castle wins vs cloud AI, NAS, home servers
All AI processing local. No cloud transmission. Your conversations, photos, health data never leave your home. Hardware kill switches for physical control. Zero telemetry to manufacturer.
Runs LLMs locally (Llama, Mistral). Vision models for photo analysis. Voice recognition and synthesis. Not a thin client to cloud—actual AI inference in your home.
Coordinates all Guardian devices. Core, Band, Visor, Fold, Conduit, Gesture Pad all connect to Castle. Unified intelligence across ecosystem. One brain, many sensors.
Monitor Cast enables workstations without dedicated PCs. Multiple users can access simultaneously. Replaces $800-2,000 desktop purchase. Lower power consumption than multiple computers.
Plug-in CPU, GPU, storage, memory modules. Upgrade components without replacing entire Castle. Investment protection as technology evolves. Pay-as-you-grow economics.
Integrated automation platform. Control smart home devices. API management for third-party services. Automation flows and webhooks. Not just AI—complete home intelligence.
How Castle powers every device
All devices → Encrypted transmission → Castle → Local AI processing → Results distributed back to devices. Zero cloud. Complete privacy. Sub-100ms latency.
$258B addressable market across PC, NAS, and AI infrastructure
Strong margins with modular upsell path
COGS: $480
Gross Margin: 47%
Entry point for ecosystem
COGS: $765
Gross Margin: 62%
Power users and small teams
GPU: $499 | Storage: $199
RAM: $149 | NPU: $299
High-margin accessory revenue
Traditional Stack (Annual):
• Desktop PC: $300/yr (amortized)
• ChatGPT Plus: $240/yr
• Cloud storage: $120/yr
• NAS: $100/yr (amortized)
Total: $760/yr recurring
Castle:
• One-time: $899-1,999
• Subscriptions: $0
• Software updates: Free
• 5-year TCO: Same as 2.5yr traditional
Pays for itself in 14-30 months
Personal, family, professional, enterprise deployments
Privacy-conscious individuals. Families wanting centralized media and backup. Home automation enthusiasts. Replace desktop PCs with multi-room workstations. Cancel AI subscriptions.
Remote teams (2-10 people). Shared file storage and collaboration. Private AI for business intelligence. Replace expensive NAS + cloud subscriptions. GDPR/data residency compliance.
Medical practices, clinics. HIPAA-compliant patient data storage. HL7/FHIR integration for EHR systems. Medical Tier with redundancy and audit logging. Privacy-first by architecture.
Photographers, videographers, designers. Centralized media storage and backup. GPU-accelerated rendering. Desktop replacement with modular expansion as projects scale.
Organizations 10-1000+ users. SOC 2, GDPR compliance. Active Directory integration. Cluster architecture for high-demand environments. Replace cloud AI subscriptions.
Universities, research institutions. Local AI for sensitive data processing. Multi-user collaboration. Privacy-compliant research computing. Grant-funded deployments.
Market timing and competitive positioning
Llama 3.1, Mistral, Phi-3 run on consumer hardware. Performance approaching GPT-4 for many tasks. Quantization techniques enable efficient inference. Technology finally ready for private AI.
$20/mo ChatGPT + $10/mo cloud storage + $15/mo streaming = subscription exhaustion. Guardian's "own once" model resonates. ROI in 14-30 months.
EU AI Act, GDPR enforcement, CCPA in California. Corporations caught mining training data. Consumers demand data sovereignty. Local-first architecture is solution.
Ryzen 7 CPUs 40% cheaper since 2021. DDR4 RAM commoditized. NVMe SSDs <$0.10/GB. NPU acceleration available. Economics enable $899 entry point.
40% of workforce remote/hybrid. Home office infrastructure investment. Need for private collaboration tools. Castle enables professional home computing.
NAS: no AI. Cloud AI: no privacy. Mac Mini: walled garden, cloud-dependent. Custom PC: no ecosystem integration. No one offers local AI + desktop replacement + mirror orchestration. Blue ocean.
Your GUARDIAN for Life, Guarding Your Health, Data, Environment, Life.
Your GUARDIAN for Life, Guarding Your Health, Data, Environment, Life.
Craig Engel
Founder & CEO, Guardian Intelligence Corporation
435-229-7360