CableDeconn USB4 8K Extension Cable .8m 40Gbps 100W
Extends a USB-C link by 0.8 m while keeping 8K at 60 Hz, 40 Gbps data and 100 W charging intact
- Connection typeUSB C to USB C
- Extends USB-C reach by .8 metres with a durable braided nylon jacket
- Drives 8K displays at 60 Hz via DisplayPort Alternate Mode
- Delivers up to 100 W power using 20 V / 5 A USB Power Delivery
- Transfers data at 40 Gbps with USB 4.0 performance
- Works with Thunderbolt 4 hosts and peripherals for full compatibility
USB4 8K Extension Cable .8m
This USB4 male-to-female extension cable connects a laptop with a USB-C port supporting DP Alternate Mode to an external monitor with a USB-C port. A separate male-to-male USB4 cable is required to complete the link and is not included in the package. It is intended for users who need to extend an existing USB4 connection by 0.8 metres.
Thermals noise and power draw
The cable supports up to 100W power delivery at 20V/5A, allowing connected devices to charge while in use. Using the original adapter matched to the device ensures the fastest power supply. No active cooling or fan noise is present because the product is a passive cable.
Build quality and connectors
Gold-plated connectors and a sturdy aluminium shell are combined with a braided nylon jacket for durability. The male-to-female design solves the problem of a short male-to-male cable by adding reach without signal degradation. It works with external SSDs and eGPU enclosures that use USB-C.
How it compares
Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.
- Price $17.99
- Pricier than about 70% of the 15,227 comparable items (median $14.99).
Specifications
| Ports & slots | |
|---|---|
| Connection type | USB C to USB C |
Questions about this item
How do I install the .8 m USB4 male-to-female extension cable without losing 40 Gbps or 8K 60 Hz?
Plug the male end into your laptop USB-C port that supports DP Alternate Mode, then connect your own USB4 male-to-male cable to the female end; the extension adds no active circuitry, so full 40 Gbps and 8K 60 Hz pass through if both cables and devices are USB4 rated.
What maintenance or replacement will the .8 m USB4 extension cable need later?
The gold-plated connectors and braided nylon jacket are passive; inspect the connector pins for debris or bent contacts every few months and replace the cable only if the shell cracks or intermittent signal appears.
What limit appears first when I push sustained 40 Gbps transfers and 100 W charging through the .8 m extension?
The 20 V 5 A power delivery ceiling is reached before the 40 Gbps data lane saturates, so thermal throttling in the host or device will trigger first during combined max-load use.
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