Trezor Suite® | Starting Up Your Device

1. Initial Pre-Requisites: Preparing for Activation

Before initiating the Trezor device, ensure you have a few essential components ready. This phase is crucial for a smooth and secure setup experience. The environmental preparedness of your workspace is an often-overlooked step. Always use a clean, private, and secure computer.

Device Unboxing and Integrity Check

Your first step is to verify the physical integrity of the package. Look for any signs of tampering, which may indicate a supply chain attack. The original manufacturer's seal must be intact. If you have any doubts, do not proceed and contact Trezor support immediately.

2. Downloading and Installing Trezor Suite

Trezor Suite is the essential desktop application for managing your device. **Crucially**, only download the software from the official Trezor website. Avoid any third-party links or search engine advertisements that might lead to a malicious phishing decoy. This application serves as the primary user-device interface.

Navigate to the official Trezor website.
Select the correct operating system version (Windows, macOS, or Linux).
Run the installer and follow the on-screen prompts carefully.

3. Establishing Secure Communication: Connection

Once the Suite is installed, connect your Trezor device to your computer using the provided USB cable. The Suite should automatically detect the device. If it does not, you may need to check your system's USB enumeration settings. The Suite will guide you through the initial firmware attestation process to ensure authenticity.

4. Establishing Access Security: PIN Configuration

The **PIN** is your device's primary physical lock. It is entered directly on the computer screen, but the number positions are displayed **randomly** on the Trezor screen. This makes it impervious to keylogging surveillance. Choose a robust, unique PIN.

**Complexity:** Use 8-9 digits for maximum security.
**Uniqueness:** Do not use sequential or repeated numbers.
**Procedure:** Watch the device screen, not the computer screen, to select the correct numbers.

5. The Inviolable Backup: Writing Down the Recovery Seed

This is the **most critical step**. Your **Recovery Seed** (a sequence of 12, 18, or 24 words, also known as a mnemonic passphrase) is the *master key* to your funds. If your Trezor is lost or destroyed, this seed allows you to recover everything onto a new device. Write it down **only** on the provided, tamper-proof recovery card and secure it in a fireproof, geographically separate location. Never store it digitally—this is an exercise in **digital self-custody**.