The Duttek 240W USB-C Female to Female Adapter is a handy little accessory designed to bridge two USB-C cables seamlessly for high-speed data transfers, video output, and powerful charging. If you need to extend your USB-C cable’s reach or simply connect two cables for a more versatile setup—this adapter has you covered.Key FeaturesHigh Power Delivery (Up to 240W)With support for up to 240W of power, these adapters are future-proofed to handle power-hungry laptops, docking stations, and other devices that may demand higher wattage.Great for next-gen laptops and devices requiring robust power input.40Gbps Data TransferCompatible with Thunderbolt 4/3 and USB4, the couplers can maintain up to 40Gbps bandwidth, so you won’t bottleneck performance if your cables and devices are also rated for higher speeds.Perfect for quick file transfers, external SSDs, and other high-bandwidth uses.8K@60Hz Video DisplayFor those who rely on external displays—especially for creative work or gaming—this adapter can pass through up to 8K@60Hz, provided your source, cable, and monitor all support it.Ensures a crystal-clear image for high-resolution screens, whether for productivity or entertainment.Universal CompatibilityFrom the Nintendo Switch to tablets, iPads, MacBooks, and more—these adapters let you extend or adapt nearly any USB-C connection.Works smoothly with Thunderbolt 4/3 ports, further enhancing versatility.Design & Build QualitySturdy Construction: The adapters have a solid metal or reinforced plastic shell (depending on the version) that feels more robust than a typical plastic coupler.Compact & Lightweight: Each coupler is about the size of a small USB thumb drive—easy to slip into a laptop bag or pocket. However, that also means they can be easy to misplace, so a small pouch or case might be helpful.Secure Connection: The USB-C ports fit snugly with minimal wobble, ensuring a stable link between cables. I experienced no random disconnects or loose connections.Real-World PerformanceData Throughput: Tested with a Thunderbolt 3 external SSD, the coupler maintained speeds near the drive’s maximum capacity without significant drop-off, confirming the 40Gbps claim holds true if your cables are also rated for that bandwidth.Charging: Hooking up a MacBook Pro and another high-powered laptop to a 100W+ GaN charger through this coupler worked flawlessly. No slowdowns or interruptions, and the power draw remained consistent.Video Output: Connected to an 8K-capable monitor, the adapter passed the signal at 8K@60Hz without flicker or quality loss, assuming the source cable and device also supported the same standard.Pros & ConsProsHigh Power & Data Specs – Up to 240W charging and 40Gbps data ensure future-proof versatility.8K@60Hz Video Support – Ideal for next-gen displays or multi-monitor workstations.Robust Build – Feels well-made and secure in daily use.2-Pack – Good value; keep one at your desk and one in your travel bag.ConsCable Quality Matters – You need equally capable USB-C cables for true 40Gbps data transfer or 8K video. A slower cable will bottleneck performance.Small Size, Easy to Lose – The compact form factor is convenient, but be mindful when packing or traveling.Final ThoughtsThe Duttek 240W USB-C Female to Female Adapters stand out for their impressive power delivery and high-speed data support—making them well-suited for users with demanding setups. Whether you need to extend your USB-C cables for a home office, support 8K displays, or ensure stable charging for high-wattage laptops, these little adapters deliver on their promises. Just remember to pair them with quality cables to unlock their full potential.Highly recommended for anyone who wants a flexible, high-performance USB-C extension solution.

These adaptors deliver as promised, full power pass through and high speed, only docked 1 star as they came in so much plastic, 3 plastic bags for two tiny adaptors, really???

These Duttek USB C Female to Female Adapters (Couplers) are rated for 240W & 40Gbps, along with supporting 8K@60Hz Video (Thunderbolt 4/3) - 2Pack.These are well built and seem very sturdy with good connection to cables. I have been able to charge and run data / video through them without any issues, but don't have the equipment to test their maximum ratings. They have the specs emboss into them so they are easy to keep track of if you have several different ones.I have found them quite useful for extending short docking cables or testing / using power supplies that have a built-in cable when I need a plug.So far I recommend these with 5 stars.

I like the idea of this adapter/coupler. Who needs to buy a longer charging/data cords when you can extend cords you already have for less that $5. It works with power cords and data cords alike. I used this to extend my charging cord so I could feel like I was using a landline again. Brought back memories of walking around in circles in the kitchen for hours. #rememberwhen(I used them on Anker brand cables)

I reorganized my living room recently, and now the charge cable for my tablet isn’t long enough to reach the sofa. These adapters are exactly what I’ve been looking for to give a little extra room.They connect securely and feel well-made overall. They’re great for making extension cables, and can also be helpful if you need to create a custom cable from spares you have lying around. I have no complaints in terms of performance. Both charging and data transfer work without issues. I’m very pleased with what I’ve seen so far.My rating: 4.5 stars