We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black USB-C to USB-C cable, 3.3 feet long, braided finish

SMUGDESK

SMUGDESK USB4 Thunderbolt 4 Cable 240W 40Gbps 8K 3.3 Feet

SKU CH-KGV8-DSNSM

A USB4 cable delivering 240 W charging, 40 Gbps data and 8K 60 Hz video over 3.3 feet

Cable Length 3.3 Feet

  • Delivers up to 240 W of power for rapid charging of laptops and accessories
  • Transfers data at up to 40 Gbps for fast file moves and backups
  • Drives a single 8K display at 60 Hz or dual 4K monitors for high-resolution workflows
  • Works with Thunderbolt 3 and 4 hosts plus USB-C 3.2, 3.1 and 2.0 devices
  • Built-in E-Mark chip ensures safe, reliable 48 V / 5 A power delivery

What this cable does

This USB4 cable connects Thunderbolt 3 and 4 hosts and devices and remains backward compatible with USB-C 3.2, 3.1 and 2.0 equipment. It carries data, video and power in a single male-to-male link for MacBook Pro, iMac, Windows laptops, docking stations and high-speed storage.

Practical limits of USB4 and Thunderbolt

The cable reaches a theoretical 40 Gbps data rate with real-world reads up to 2.8 GB/s and writes up to 2.1 GB/s. It drives one 8K or 5K display at 60 Hz or two 4K displays at 60 Hz, provided the USB-C port supports DisplayPort Alternate Mode. Length is 3.3 feet.

The spec that decides fit

Power delivery tops out at 240 W (48 V / 5 A) via E-Mark, far above earlier 60 W and 100 W cables, so it can charge phones, accessories and gaming laptops alike. Buyers whose devices or chargers do not support USB Power Delivery above 100 W will not see the higher rate.

Highlights

  • Delivers up to 240 W of power for rapid charging of laptops and accessories
  • Transfers data at up to 40 Gbps for fast file moves and backups
  • Drives a single 8K display at 60 Hz or dual 4K monitors for high-resolution workflows
  • Works with Thunderbolt 3 and 4 hosts plus USB-C 3.2, 3.1 and 2.0 devices
  • Built-in E-Mark chip ensures safe, reliable 48 V / 5 A power delivery

Specifications

No published specifications for this item yet.

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Should I pick the 3.3-foot length or a longer cable for my setup?

The 3.3-foot length keeps signal integrity at the full 40Gbps and 240W rating; longer passive cables often drop to lower speeds or power limits.

What does the 40Gbps rating actually deliver when I copy large files?

Real-world reads reach 2.8GB/s and writes reach 2.1GB/s, so a 2.5GB file moves in roughly one second.

How does the Thunderbolt 4 interface cap charging and video in practice?

Thunderbolt 4 caps power at 240W (48V/5A) and video at one 8K@60Hz or dual 4K@60Hz displays.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.