USB C Extension Cable

Technical Specifications

40Gbps 240W EPR Cable | B2B OEM/Wholesale Supply

Product Overview

The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable is a high-performance Type-C-to-Type-C cable built to carry 40Gbps data, up to 240W USB Power Delivery, and video over a single cable between Thunderbolt 4, USB4, and compatible USB-C hosts and peripherals. As a Thunderbolt cable manufacturer, we position this Thunderbolt 4 cable as a premium interconnect for laptops, docks, external graphics enclosures, and high-resolution displays. For USB4 cable buyers—including premium accessory brands, workstation distributors, docking station OEMs, and system integrators—this product is a high-bandwidth, high-power cable, not a general-purpose charging cable.

40Gbps Data Performance

The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable supports up to 40Gbps data transfer, the top speed of Thunderbolt 4 and USB4 interfaces. This bandwidth is shared across PCIe data, DisplayPort video, and USB traffic on the same cable. As a 40Gbps USB C cable supplier, we note that actual throughput depends on the host port, the connected device, and whether both ends support 40Gbps; a 40Gbps cable cannot deliver 40Gbps when plugged into a USB 3.2 10Gbps or USB 2.0 port. For TB4 cable buyers connecting external SSDs, eGPUs, or docks, we recommend confirming that both the laptop port and the peripheral support the expected bandwidth before volume deployment.

240W Power Delivery

The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable supports up to 240W (USB PD 3.1 Extended Power Range, EPR) charging over the same Type-C connector. This covers power-hungry laptops, docks, and monitors that pull more than the 100W (USB PD 3.0) limit of earlier cables. As a 240W USB C cable manufacturer, we note that actual charging wattage is negotiated between the charger and the device: the cable must be capable of 240W, but the laptop will only draw what its charger and firmware support. For USB PD 3.1 cable buyers, we recommend pairing this cable with a 240W-rated charger and confirming that the laptop supports EPR, rather than assuming every laptop will pull 240W.

Video & Display Support

The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable carries DisplayPort video over Type-C (DP Alt Mode), supporting high-resolution displays including up to 8K or dual 4K monitors depending on host and dock capability. Thunderbolt 4 certification requires certain baseline display and docking features, but the actual monitor output depends on the laptop’s GPU and the monitor’s input. As an 8K USB C cable supplier, we recommend that buyers verify the target display configuration (resolution, refresh rate, number of monitors) against the laptop’s port specification, because the cable is one link in the display chain. For eGPU cable buyers, Thunderbolt 4 certification ensures compatibility with certified docks and enclosures, but performance still depends on the host GPU configuration.

Build Quality, Length & Active vs Passive

The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable is built with shielded connectors and reinforced strain relief to handle repeated plugging and unplugging. Length is a critical spec for 40Gbps cables: passive cables that support the full 40Gbps rate are typically short (around 0.8m), while longer cables (commonly 1m, 1.5m, 2m) require an active cable with built-in signal conditioning chips. As a Type-C to Type-C cable manufacturer, we label each SKU as passive or active and match the rated length to the 40Gbps specification. For active Thunderbolt cable buyers, choosing the correct length class is important—using a passive short-length cable at 2m will not reliably run 40Gbps, and buyers should not expect every length to hit the full 40Gbps rating.

Applications

The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable is used across a range of high-performance scenarios: connecting Thunderbolt 4 docks to laptops for single-cable desktop setups, driving 8K or multi-monitor workstation displays, connecting external graphics enclosures (eGPUs), attaching fast external SSD arrays, and power-charging high-wattage laptops over the same cable. As a Thunderbolt 4 certified cable supplier (where certification applies), we serve premium accessory brands, workstation integrators, docking station OEMs, and creative-profession channel distributors. For high speed USB C cable buyers, this product is positioned at the premium end of the Type-C cable market, not as a budget charging cable.

OEM / Customization & Wholesale

We offer Thunderbolt cable supplier private-label services for premium brands, dock OEMs, and system integrators that want a co-branded high-performance cable. The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable supports customization of cable length (within passive/active limits), connector housing color, retail packaging, and logo application. Our 40Gbps data cable production supports both sample cartons for validation and bulk orders for dock bundling and retail distribution. As a Type C cable wholesale manufacturer, we provide sample units for buyers to test with their specific host, dock, and display combination before volume commitment.

Why Partner With Us

When you source the Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable through our production facility, you work with a high-performance cable manufacturer that controls conductor preparation, shielding assembly, connector termination, and end-of-line signal testing in-house. Our engineering team supports length selection, packaging design, and after-sales technical response. We serve premium accessory brands, docking station OEMs, workstation integrators, and regional distributors, adapting lengths and packaging to regional market requirements.

Technical Specifications

Frequently Asked Questions

Q: Does this cable deliver 40Gbps at every length? No. The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable delivers 40Gbps within its rated length class. Short passive cables run at 40Gbps only up to their designed length; longer 40Gbps cables require an active built-in chipset. Please confirm the length and active/passive status when ordering, because not every length runs at the full 40Gbps rating.

Q: Will it charge my laptop at 240W? The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable is rated to carry 240W, but actual charging wattage depends on three factors: the charger’s EPR rating, the laptop’s charging acceptance, and the cable’s EPR support. A 240W-rated cable will not force a 60W laptop to charge at 240W. As a 240W USB C cable supplier, we recommend pairing it with an EPR-rated charger and an EPR-capable laptop.

Q: Is it the same as a regular USB-C cable? No. The Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable is a high-performance 40Gbps / 240W cable. A standard USB-C charging cable typically runs at USB 2.0 (480Mbps) or USB 3.2 (10Gbps) and up to 100W. This cable supports higher bandwidth and power, but at a correspondingly higher price.

Q: Is it Thunderbolt 4 certified? Certification depends on the SKU. Some configurations are Thunderbolt 4 certified, others are USB4-certified or USB4-compatible. As a Thunderbolt cable manufacturer, we recommend confirming the specific certification status with our sales team before listing “Thunderbolt 4 certified” on your packaging, since certified and non-certified variants have different cost and compliance implications.

Get a Quote

Ready to bundle the Thunderbolt 4 USB4 40Gbps 240W Type-C to Type-C Cable with your docks, workstations, or premium accessory line? Contact our Thunderbolt cable supplier sales team today for current pricing, sample lead times, length options, and MOQ details. Whether you need a small batch for compatibility testing or volume supply for dock bundling, our team is prepared to support your project with high-performance Type-C cables and responsive communication.