Discover why this compact dock is perfect for gaming, tablets, laptops, and portable setups with 4K 120Hz support, Ethernet, and fast charging.
buy from amazonJSAUX is a tech accessories brand that has built a strong name for itself by making practical, well designed products for everyday devices and handheld gaming systems. The company originally focused on cables and basic connectivity gear, but over time expanded into docking stations, protective cases, portable monitors, and accessories for devices like the Steam Deck, ROG Ally, and Nintendo Switch.
What stands out to me is their focus on functionality and real-world usability. Their products are designed to solve common problems without overcomplicating things. They have grown into a globally recognized brand, selling in many countries and becoming especially popular among gamers and tech enthusiasts who want reliable accessories without paying premium brand prices.
This upgraded 5-in-1 docking station delivers 4K at 120Hz through HDMI 2.1 for ultra-smooth, high refresh rate gameplay on an external display. It also includes 100W Power Delivery charging, dual USB-A ports, and built in Ethernet for a stable wired connection. Full speed charging support allows you to game in Turbo Mode without worrying about battery drain, and the RJ45 port helps reduce latency for online play.
It is designed as an all-in-one dock and works with Steam Deck LCD and OLED, ROG Ally and Ally X, Legion Go and Go S, and MSI Claw. It does not support the ROG Xbox Ally models. Beyond handhelds, it can also be used with tablets, phones, and laptops, making it more versatile than just a gaming dock.
Unboxing and Setup
Inside the box you get the dock itself and a small instruction manual. First impressions were very positive. The dock feels high quality and is made of metal, which gives it a solid and durable feel. It also has rubber pads to protect whatever device you use with it. That is a small detail but a really nice touch.
The dock features a non-removable USB C cable, a USB C port for Power Delivery capable of up to 100W fast charging, one HDMI port, one Ethernet port, and two USB A ports. The layout is simple and easy to understand.
For my setup, I use my REDMAGIC Astra, which fits perfectly into the dock. REDMAGIC’s Game Space software allows for console mode, letting the tablet upscale to a full screen monitor and support up to 240Hz at 4K if your dock and monitor can handle it. In my personal setup, I typically play at 144Hz at 2560×1440. That makes this dock a perfect fit for what I need. I power everything using an 80W REDMAGIC charging brick, which has been more than enough for my use.
While I do not personally own a Steam Deck, I did test this dock using a friend’s device to see how it would perform. It worked perfectly in that setup as well, with smooth display output, stable Ethernet, and proper charging support. It is good to know it performs just as well with a dedicated handheld console.
When traveling, I sometimes bring a portable monitor with me. The dock slides easily into my monitor carrying bag, which makes it a perfect travel companion and easy to set up anywhere.
Overall Use
In my actual setup running 2560×1440 at 144Hz and 120Hz in Fortnite, this dock has been completely solid. I mainly play Call of Duty Mobile and Fortnite on my REDMAGIC Astra using console mode, and I have had zero issues with performance, signal drop, or charging.
At 144Hz or 120Hz in 2K, gameplay feels smooth and responsive. The dock handles the output without flickering, instability, or random disconnects. My 80W REDMAGIC charging brick keeps everything powered consistently, even during longer gaming sessions, so I never have to worry about battery drain.
The wired Ethernet connection adds another level of stability, which really helps in competitive matches where connection consistency matters. Overall, it fits perfectly into my setup and does exactly what I need it to do, whether I am gaming at my desk or setting up with a portable monitor while traveling.
The only thing I would change is I wish it had one more USB C port. Having an extra USB C connection would make it easier to plug in gaming headphones without needing an adapter. It would also be great to see a DisplayPort option in the future. For higher end gaming monitor setups, DisplayPort support would make this dock even more powerful and flexible. Even without those additions, it still performs extremely well for my current setup.
Pricing
The JSAUX USB C Multifunction Adapter is available on jsaux.com for $29.99 or Amazon for $25.99 at the time of publishing.
Conclusion
At $25.99, this dock is an incredible value for what it offers. You are getting HDMI 2.1 with support for up to 4K at 120Hz, 100W Power Delivery charging, dual USB A ports, and a reliable Ethernet connection all packed into a solid metal build that feels premium. In my personal setup running 1440p at 144Hz and 120Hz in Fortnite, it has performed flawlessly. I have had zero issues with stability, charging, or display output, and it has handled everything from competitive gaming to portable travel setups without a problem.
It also proved to work perfectly when I tested it with a Steam Deck, so it is not limited to just my tablet setup. The versatility across handhelds, tablets, and even laptops makes it even more appealing.
The only real thing I wish it had is a DisplayPort option and maybe one extra USB C port for accessories like gaming headphones. Aside from that, I genuinely love this dock. For $25.99, it delivers premium level performance and features at a budget friendly price, making it one of the best value accessories you can add to your setup.
For more information, visit jsaux.com
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