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Black USB-C to USB-C cable, 3.3 ft length

LUOM

LUOM USB4 3.3 ft 40 Gbps 240W USB C cable

SKU CH-33WS-MJDR4 MPN USB4

A 3.3 ft USB4 cable delivering 40 Gbps data transfer, 240 W charging and single 8K or dual 4K display support

  • Refresh frequency8K@60 Hz
  • Connection typeUSB C to USB C
  • Connector genderMale to Male
  • Apple compatibilityUSB-C port
  • Product typeUSB4
  • Product colorBlack

Cable Length 3.3 Feet

Model USB4

  • Charges up to 240 W with PD 3.1
  • Transfers data at 40 Gbps USB4 speed
  • Drives single 8K 60 Hz or dual 4K 60 Hz displays
  • Works with Thunderbolt 3 and 4 hosts
  • Built-in safety resistor limits current to 5 A

Cable purpose and fit

This LUOM USB4 cable connects two USB-C devices with a single 3.3 ft lead. It suits anyone who needs 40 Gbps bandwidth and up to 240 W charging between a laptop, dock, SSD enclosure or monitor. Buyers who want more length or a right-angled plug should look elsewhere.

Sustained-load behaviour

The cable carries 48 V at 5 A continuously under the PD 3.1 specification, keeping current stable through a built-in safety resistor. Data throughput holds at the rated 40 Gbps during long transfers such as 2500 MB/s file moves, and video output sustains 8K at 60 Hz or dual 4K at 60 Hz without throttling.

Installation and common issues

Male-to-male reversible ends plug in either way, and the cable works bidirectionally with Thunderbolt 3 and 4 hosts as well as older USB 3.2, 3.1, 3.0 and 2.0 gear. The main pitfall is that 8K or dual 4K video only appears when the source port supports DisplayPort Alternate Mode; otherwise the link falls back to data and charging only.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $14.99
Typical for this category: the median of 15,227 items is $14.99.
Refresh frequency 8K@60 Hz
Typical for this category: the median of 366 items is 60 Hz.

Specifications

Product
Brand nameLUOM
Model namePQ003
Product typeUSB4
Product colorBlack
Display
Refresh frequency8K@60 Hz
Ports & slots
Connection typeUSB C to USB C
Thunderbolt 3 supportYes
Connector genderMale to Male
Compatibility
Apple compatibilityUSB-C port

Other versions of this model

5 more in the same range

Questions about this item

Does the 3.3 ft cable get warm when delivering 240 W continuously?

The cable includes a built-in safety resistor that keeps current stable at 5 A, preventing excess heat during extended high-power use.

What must my charger and device support to reach 240 W with this cable?

Both the charger and the connected device need USB PD 3.1 with Extended Power Range at 48 V / 5 A for the full 240 W rate.

Will this cable run at 40 Gbps with my older Thunderbolt 3 dock?

Yes, it is backward compatible with Thunderbolt 3 and USB 3.2, 3.1, 3.0 and 2.0 devices, though speed matches the lowest common standard.

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