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Description
SIIG 240W GaN PD 3.1 Charger - 3C1AThe SIIG 240W GaN PD 3. 1 Charger, model 3C1A, is a breakthrough in highpower, multiport charging. Built on the efficiency and heatreducing advantages of GaN technology, this compact fourport charger consolidates the power you need for laptops, tablets, and phones into a single, portable solution. Whether youre powering a home office, traveling for work, or simply upgrading your charging station, the 3C1A delivers fast, reliable, and safe charging
The SIIG 240W GaN PD 3.1 Charger, model 3C1A, is a breakthrough in high‑power, multi‑port charging. Built on the efficiency and heat‑reducing advantages of GaN technology, this compact four‑port charger consolidates the power you need for laptops, tablets, and phones into a single, portable solution. Whether you’re powering a home office, traveling for work, or simply upgrading your charging station, the 3C1A delivers fast, reliable, and safe charging across multiple devices without clutter or heat buildup.
- GaN technology enables a smaller, lighter charger with less heat generation while delivering a formidable total output of up to 240W. The configuration includes three USB‑C ports and one USB‑A port, designed to handle demanding devices in parallel. USB‑C Port 1 can supply up to 140W, while USB‑C Ports 2 and 3 can each deliver up to 100W, and USB‑A can provide up to 30W for faster charging of phones, tablets, and peripherals.
- Versatile power delivery for a wide range of devices. The charger supports PD 3.1, PD 3.0, and PPS, ensuring intelligent negotiation with connected devices for the most efficient charge. This means you can top off a MacBook Pro, a Windows laptop, a high‑end Android phone, and a tablet all at once, with each device drawing the power it needs without overloading the outlet.
- Smart 4‑port charging designed for busy desks. The 3 USB‑C ports maximize high‑wattage charging so you can run a laptop, a smartphone, and a tablet from one centralized hub, while the USB‑A port handles accessories or legacy USB devices. This eliminates the need for multiple chargers and simplifies your workspace without compromising speed.
- Safety and reliability you can trust. The SIIG charger integrates multiple protective layers to safeguard both the charger and your devices. Expect robust protections against over‑current, over‑voltage, short‑circuit, and excessive temperature. GaN technology not only boosts efficiency but helps keep the device cooler during extended charging sessions, extending both performance and longevity.
- Travel‑friendly, universal voltage design. The lightweight, compact form factor makes it ideal for travel, business trips, and on‑the‑go workflows. It supports global use with common input voltages and a universal charging profile, enabling easy compatibility in different regions when paired with the appropriate outlet adapter.
Technical Details of SIIG 240W GaN PD 3.1 Charger - 3C1A
- Ports and power: USB‑C Port 1 up to 140W, USB‑C Port 2 up to 100W, USB‑C Port 3 up to 100W, USB‑A up to 30W; total maximum output 240W.
- Charging standards: PD 3.1, PD 3.0, and PPS; supports Fast Charge 2.0 for compatible devices.
- Port configuration: 3 USB‑C ports and 1 USB‑A port delivering simultaneous high‑power charging.
- Technology: GaN (gallium nitride) based charger for higher efficiency, cooler operation, and smaller size compared to conventional silicon chargers.
- Input and compatibility: Designed for global use with standard AC input; compatible with PD‑enabled devices including laptops, tablets, and smartphones via USB‑C; USB‑A devices supported as well.
- Safety features: Built‑in protections including over‑current, over‑voltage, short‑circuit, and over‑temperature protection to prevent damage during charging.
How to install SIIG 240W GaN PD 3.1 Charger
- Plug the SIIG 240W GaN PD 3.1 Charger into a suitable AC outlet using the included plug or a compatible adapter for your region.
- Connect your devices to the appropriate ports: use USB‑C cables for the PD ports to achieve the highest wattage per device, and USB‑A cables for legacy accessories.
- Distribute the load across ports to maximize efficiency: USB‑C Port 1 should be used for devices requiring the highest wattage (up to 140W), while Ports 2 and 3 can power additional USB‑C devices up to 100W each; the USB‑A port can handle lower‑demand peripherals simultaneously.
- Power the entire setup by ensuring the total draw does not exceed 240W. The charger automatically negotiates the best power levels with each connected device, so you don’t need to manually configure individual port wattages.
- For international travel, pair the charger with the appropriate regional plug adapter if needed and use PD‑enabled cables to ensure you consistently reach the maximum charging performance supported by your devices.
Frequently asked questions
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Q: Is the SIIG 240W GaN PD 3.1 Charger compatible with PD 3.1 and PPS?
A: Yes. The charger supports PD 3.1, PD 3.0, and PPS, enabling fast, efficient charging for a wide range of USB‑C devices.
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Q: How many devices can I charge at once?
A: It supports up to four ports with a combined total of 240W. You can charge multiple devices in parallel, but the total load must not exceed 240W.
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Q: Can USB‑C Port 1 deliver 140W?
A: Yes. USB‑C Port 1 is rated up to 140W, while USB‑C Ports 2 and 3 can supply up to 100W each; USB‑A provides up to 30W.
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Q: Is this charger good for travel?
A: Absolutely. The GaN design reduces size and weight, and the charger supports global voltage ranges so it works with international power outlets when using the appropriate plug adapters.
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Q: What cables should I use?
A: Use PD‑enabled USB‑C cables to achieve higher wattage on USB‑C ports. USB‑A devices will work with standard USB‑A cables.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Perfect Balance of Comfort, Support, and Style!
Size: 934-Z, Color: Black, Size: 934-Z, Color: Black
I’ve been using this chair for a few weeks now, and I’m genuinely impressed with how much of a difference it’s made in my workspace. The mesh back is one of my favorite features—it offers excellent breathability and prevents that sticky, overheated feeling you sometimes get with solid-back chairs, even after sitting for hours. The seat cushion is firm enough to give proper support but still has enough give to keep me comfortable through long workdays. It feels like the perfect middle ground between soft and supportive.
The adjustable foot ring has been a complete game changer for me. I use a taller desk setup, and having somewhere to rest my feet makes a huge difference in posture and overall comfort. Whether I’m sitting upright for focused work or leaning back to read, it’s always at the right height.
The flip-up armrests are another smart design choice. When I’m typing, I like to have them down for support, but when I’m done, I can flip them up and push the chair neatly under my desk—saving space and keeping things tidy. The casters roll smoothly on both hardwood and rugs, so I can move around easily without scraping the floor or getting stuck. The overall build quality feels solid and sturdy, with no wobbles or creaks.
Assembly was surprisingly quick—everything was clearly labeled, the parts felt durable, and it only took me about 20 minutes from opening the box to sitting in the chair. The sleek, modern look is another big plus—it blends in perfectly with my home office décor without feeling bulky or taking up too much visual space.
If you’re looking for a chair that combines comfort, ergonomic support, durability, and style, I can’t recommend this one enough. It’s equally great for work, studying, or just relaxing at your desk, and it’s definitely been worth every penny.
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Reviewed in the United States on August 12, 2025
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality.
Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy.
Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
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Reviewed in the United States on May 29, 2026
★★★★★ 4
Good Value for a Tall Chair
Size: 934W-Z, Color: White
I have received this chair just today and would like to give my first impressions of it.
Height is super adjustable as well as the foot rest. My desk is very tall (~34 inches vs standard ~29 inches) and does not suit a standard height chair. This chair's height is enough to sit comfortably at mybut also still having adjustment to be even higher.
Lumbar support is a manual adjustment that can be adjusted by sliding the lumbar piece up or down and it seems it can be tiled as well.
No reclining feature or slight backrest tilt adjustment. I'm used to my chairs reclining so it feels a little awkward siting in a flat base and straight backrest. I feel like I'm sitting too forward or leaning forward slightly but is probably something I can get use to.
Easy to put together and feels very sturdy. Plastic parts of chair are made from a really sturdy plastic, like playhouse plastic materials. Wheels roll around carpet easily. Mesh seems to be a strong material, though the mesh feels kind itchy on bare skin.
Overall, I think this is a good chair to get if you're needing a tall chair for a good value and can sacrifice no backrest tilt.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Perfect chair!
Size: 934-Z, Color: Blue, Size: 934-Z, Color: Blue
I have an adjustable-height desk (also purchased from Amazon) and needed a drafting chair for those times when my body gets tired of standing. This chair fits the bill and then some! I put it together myself; it took me about an hour, but would take me about half that next time, since now I know what to do (and what NOT to do!). All the parts were there; there are even spare parts (see photo). All the holes were drilled in exactly the right places, too, which isn't always the case when I buy things from Amazon (my standing desk is a great example). The chair fits me; I'm short (5'3.5"), and often the seats of furniture are too deep for me to rest my feet flat on the floor. The depth of the seat on this chair is just a little over 18 inches, and with the adjustable footrest ring, it's perfect. I don't think a tall or heavy person would fit in it, to be honest. But it's perfect for those of us who are vertically challenged. I love that it glides easily on my hardwood floors and that it turns 360 degrees. The chair comes in numerous luscious colors, so take your pick! It is very sturdy, has good lumbar support, and the seat and seat back are very comfortable. And the arms flip up, which was an absolute must when I was shopping for this chair. I got it on sale, too -- $109.00 -- and I'm delighted with this purchase.
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Reviewed in the United States on April 23, 2026