Unitek USB-C Keychain Cable USB4 40 Gb/s 240W PD 8K 13 cm, black

The Unitek USB-C Keychain Cable USB4 40 Gb/s 240W PD 8K 13 cm in black is a compact, high-performance USB-C lead designed for brief, portable connections. At 13 cm length it fits easily on a keyring or in a bag and provides USB4 data transfer speeds up to 40 Gb/s together with support for high-wattage Power Delivery up to 240W. The cable also supports video output up to 8K resolution, enabling direct connections between compatible laptops, monitors, docks and power adapters for charging, display and high-bandwidth peripheral use.

Advantages

This short Unitek USB-C cable combines high data throughput and power delivery in a pocketable form factor. It reduces cable clutter when you need a durable, always-available link for data sync, external video or fast charging. The black finish and compact design make it easy to carry on a keychain without adding bulk, while USB4 compatibility ensures support for modern host and device capabilities where both speed and power are required.

Suitable for

• Fast charging compatible laptops and mobile devices using high-watt USB-C Power Delivery.
• High-bandwidth data transfers between USB4-capable hosts and peripherals.
• Connecting a laptop to an external display or dock that accepts USB-C video input up to 8K.
• Situations where a short, portable cable is needed—keychain carry, travel, or minimal desk setups.

When it may not be suitable

This 13 cm keychain-style cable is intentionally short; it is not suitable when longer cable runs are required, for example connecting distant monitors or charging points. It will only provide the stated speeds, video and power if both connected devices and any intermediate equipment fully support USB4, 8K video output and high-watt Power Delivery specifications.

Key specifications

• Length: 13 cm
• Interface: USB-C to USB-C
• Data transfer rate: up to 40 Gb/s (USB4)
• Power Delivery: up to 240 W
• Video support: up to 8K resolution (with compatible devices)
• Colour: black

How to use

Connect the cable between two USB-C ports on compatible devices such as a laptop and a power adapter, dock or monitor. For maximum data throughput and video capability, ensure both endpoints support USB4 and the desired alternate mode for video. For fast charging, connect to a power adapter or host that advertises sufficient Power Delivery capacity; the connected device will negotiate the appropriate voltage and current. Store the cable on a keyring or in a small pouch when not in use to keep it accessible and reduce wear.

What to consider before purchase

• Both connected devices must support USB4 and the required alternate mode to achieve 40 Gb/s and 8K video.
• To reach 240W charging, the power adapter and device must support high-watt Power Delivery profiles.
• The 13 cm length is designed for short connections; plan for longer cables if you need distance between devices.
• Check device compatibility for USB-C alternate modes (DisplayPort/Display over USB-C) if using for video output.

Usage recommendations

Use the Unitek USB-C keychain cable as a convenient, durable on-the-go connection for high-speed data transfers, brief display hookups and emergency or routine fast charging. For sustained heavy use such as permanent docking stations or long cable runs, select a longer, certified USB4 cable and a power adapter rated for the required continuous power.