The YubiKey 5Ci is a versatile and highly secure authentication device designed to provide robust protection against phishing attacks and unauthorized access to your accounts. With a dual connector design, it supports both USB-C and Lightning ports, making it compatible with a wide range of devices.

Key Specifications:

• Connectors: Dual connectors for USB-C and Lightning.
• Dimensions: 12mm height, 40.3mm length, 5mm width.
• Weight: Approximately 2.9 grams.
• Power Consumption: Less than 150 milliwatts.
• Data Transfer Rate: 12 megabits per second (Mbps).
• Ingress Protection (IP) Rating: IP68, resistant to dust and water.

The YubiKey 5Ci supports various authentication protocols:

• FIDO2: Hardware-bound passkeys for secure login.
• FIDO U2F: Universal second-factor authentication.
• PIV: Smart card protocol compatible with Personal Identity Verification.
• OATH: Includes HOTP and TOTP.
• OpenPGP: For secure email communication.
• WebAuthn: Web-based authentication protocol.

It is compatible with multiple operating systems and services, making it a versatile choice for securing accounts.