- USB 4 Cable 1FT 40Gbps, 2 Packs, USB C to USB C 240W, 8K Video Monitor | 5A Fast Charging, 40Gbps High Speed Data Transfer, Single 8K or Dual 4K Display Video Output Compatible for Thunderbolt 4

Works great when matched up with devices that can output the speed these cable are capable of. A bit stiff for my liking though, yet it does ascribe to the quality built into these cables.

This week I purchased a highly rated 1-foot USB C-C cable from Amazon and gave it a try. Within a minute, I found out why the price was so inexpensive. I needed a back-up high-speed cable to download high-resolution images from my digital camera. My current cable plugged into my slowest port is quite adequate for importing 60mb, 14-bit files, 20-30 per 5-10 seconds and when I'm on the road shooting, it can be 1000-1200 images per day so speed is critical for downloading if I was to sleep or relax after photographing all day. As I first said, I tried a less expensive cable and I was downloading a single image, waiting, then a couple of images, waiting, and.... I knew I had made a mistake and returned them. Although I purchased 3 cables for less than I paid for one of the pair I purchased, it was a waste of time and $$$. I checked into other cables on Amazon and found these and they are built more robustly. However, more importantly, in the same port, I think it may be even faster than my older cable, which was quite fast on its own accord. The extra length over my six-inch cable makes it more convenient, too, so I don't have to try to balance the card reader and hard drive over the edge of a small work surface. Save yourself the trouble and just pay the extra price for much better compatibility, better build, and faster cables that the SUMPK brand sees to be.

I only use the cable at 10 - 20 Gb/s but it performs perfectly. The length of the cable and its build quality are great. It is a little stiff but I expect that considering the individual conductors of the cable must be thicker to handle the current draw for a 240W charge capacity. I have not tested the cable for charging a device.

Great cable - Thicker and slightly stiffer than the picture makes it look, but very well built and not inflexible either. Works with my thunderbolt 3 SSD enclosure at full SSD speed and charges everything I have (none of which actually pushes 240w but the cable has no problem at 100w). E-chip test says it's USB-4 Gen 3 (40gbps) and supports up to 50Volts at 5Amps so slightly more than the 240w advertised.

Fast but stiff. This might be a little stiff for some people but it does match the speed and data transfer speed.

Good quality. Good data transfer.

The cables were the size I wanted. They help me charge my devices faster by using USB-C connections on both ends.

Use this for editing video off of SSDs, THESE THINGS COOK

Muy muy bueno

Parfait, aussi bien pour la vitesse de chargement des données que pour la vitesse de chargement des batteries 🪫

Prezzo non economico ma giustificato, i cavi sembrano davvero resistenti e utilizzato con un hub usb c fanno il loro dovere egregiamente. Con il vecchio cavo il segnale video hdmi dava problemi, con questo ho risolto.

Super jakość solidnie wyglądają zobaczymy jak długo będą służyć jak narazie polecam :)

Good quality cables. I've only used them for charging, but I've used them for charging laptops etc with no problems. Some cheaper cables can't handle high-power devices like laptops, but these cables managed fine.