Silkland 40Gbps USB4 Extension Cable 3.3ft
Product description
This USB-C extension cable from Silkland extends Thunderbolt 4 or USB4 connections while supporting high-speed data transfer and high-power charging, useful for desks where short cables limit placement and for protecting device ports during frequent plugging and unplugging. It aims to deliver up to 40 Gbps data throughput and PD3.1-compatible charging up to 240 W according to the manufacturer.
Key Points
The Silkland extension cable lets you move a USB-C or Thunderbolt connection a few feet away from the host device without losing functionality. It supports video output in 8K@60Hz or dual 4K@60Hz when used with devices that support DisplayPort Alt Mode. The braided 48-strand design reduces tangling and improves durability for daily use. One nuance to note is that video output requires a source port compatible with Alt Mode and that full stability depends on system software being up to date.
Technical Specifications
- Name: Silkland 40Gbps USB 4 Extension Cable for Thunderbolt 4
- Length: 3.3 ft (approx. 1 m)
- Data transfer: 40 Gbps (approx. 3700 MB/s)
- Video: 8K@60Hz 10-bit HDR or dual 4K@60Hz
- Power delivery: up to 240 W (48 V / 5 A) PD3.1 and QC4.0+ compatible
Usage Recommendations
Use this cable to extend a USB-C hub, docking station, or laptop port when you need more reach without rearranging hardware. It can protect laptops and tablets from wear by keeping the hub connection at an accessible point. For best results, update macOS or Windows to the latest version and keep the total active cable run under about 3 meters to maintain stable Thunderbolt/USB4 performance.
Advantages
The integrated E-Marker chip enables smart current negotiation so connected devices receive appropriate power levels, and the cable is backward compatible with USB 3.2, 3.1, 3.0 and 2.0. The construction includes OFC conductors and stainless steel connectors to help preserve signal integrity and longevity during frequent use. Consider that very long combined cable runs or incompatible host ports may limit some high-bandwidth video or power features.