Hi, guys. Welcome back to today's video.
We've taken apart several dual USB-C cable that supports 240W from different brands,
like Baseus, and UGREEN.
Today, we will take apart a DIY Thunderbolt 4 cable
to see how it differs from USB-C cable from brands.
It also has a braided version.
The metal case is fixed by screws, which is more convenient for maintenance.
It adopts a full-pin design.
The junction of the cable and connector is protected with a rubber sleeve to improve its durability.
A clip-on ferrite magnetic ring is in the middle of the cable to suppress the interference.
It can be easily taken off.
The cable length is about 1m (3' 3.37'').
And the diameter is about 4.74mm (0.19 inches).
The overall weight is about 64g (2.26 oz).
The ChargerLAB POWER-Z KM002C shows it's a passive Thunderbolt 4 cable with an E-Marker chip.
It can support 240W EPR and 40Gbps.
Use it to charge the MacBook Pro with the USB-C port,
and the charging power is about 95W.
It can trigger the 100W PD protocol successfully.
Firstly, let's cut off the cable.
And remove the outer rubber layer.
There's a layer of braided shielding mesh inside.
Unlike the other cable we took apart,
a layer of silver conductive textile wraps all the wires inside instead of aluminum foil.
There're 14 wires inside, including four pairs of coaxial cables and some auxiliary cables.
The coaxial cables are in different colors, including green, red, orange, blue, purple, black, white, and yellow.
The internal structure of those coaxial cables is pretty similar.
The outermost layer is a layer of plastic for insulation and copper foil.
The middle shielding layer is composed of silver-plating pure copper.
And there's a translucent insulating layer to protect the innermost silver plating wires,
which can reduce signal transmission loss.
Then, two thick red wires are used for the positive power supply.
And the blue wire is used for USB 2.0 data transmission.
Some auxiliary cables are also in different colors,
including red, yellow, blue, and black.
There are no tensile fibers inside.
These yellow ones are tensile fibers.
Next, move to the USB-C connector.
Since it's a DIY product, it's easy to take it apart.
Just unscrew those four fixing screws.
And we can remove the metal case.
All wires on two sides are soldered on the green PCB, fixed and insulated by transparent UV glue.
Continue to remove the metal case of the other USB-C connector.
The internal structure is pretty similar,
but there's an additional E-marker chip.
Use the knife to remove the UV glue slowly.
Then, we find the E-Marker chip is from Infineon.
It integrates a 48MHz processor, 32KB flash memory, and 4KB SRAM.
It also has a Zener diode for overvoltage protection.
Well, the supported 240W fast charging and 40Gbps data transmission speed
can meet the needs of the future.
It also has four pairs of coaxial cables inside with good insulation performance.
The clip-on ferrite magnetic ring in the middle of the cable
can greatly enhance its anti-interference performance.
You can also consider making a Thunderbolt 4 cable if you want.
OK. That's all for today's video.
You can click the corners to view other cable teardown videos.
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I'll catch you guys in the next video. Bye.