Frequently Asked Questions
The following are the most common questions from CALMVPS users about ordering, access, and operations. Use the search above to quickly find what you need.
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Ordering & Delivery
How do I place an order? How long does delivery take?
Is an SSH public key required when placing an order?
SSH Public Key. After delivery, password login is disabled by default — only key-based authentication is allowed to reduce brute-force risk. If you have not uploaded a key yet, you can submit one in the console under "Instance Details" and trigger a reinstall if necessary.Which OS images are supported? How do I reinstall?
Hardware & Underlying Architecture
Are physical nodes 100% dedicated resources?
How do I choose between M4 / M4 Pro / M4 Max?
What is Thunderbolt 5 parallel link technology?
Access & Remote Management
How do I get SSH root access?
ssh root@<the instance IP>to log in. Password login is disabled by default; only key-based authentication is supported.Why can't I connect via VNC screen sharing?
- Security group:Add your current public IP to the whitelist in the console under "Network Security" to allow the VNC port (default 5900).
- Client:The built-in macOS "Screen Sharing" app is recommended for better color compression and latency performance.
How does "Power Management" work in the console?
Development Environment & AI Inference
How do I set up an MLX LLM inference environment?
- Use Conda or venv to manage your Python environment;
- Install
mlx,mlx-lmand other official packages; - On physical hardware, you can directly observe power consumption and thermal output for long-running inference tuning.