How I Tested the 4 Pin to Molex Connector: My Honest Review and Tips
When I first started diving into the world of PC building and electronics, I quickly realized how important the right connectors are for a smooth and reliable setup. One connector that often pops up in various projects is the 4 Pin to Molex connector. It might sound technical, but this small component plays a surprisingly big role in powering devices and ensuring everything runs seamlessly. Whether you’re a seasoned builder or just curious about how these connections work behind the scenes, understanding the 4 Pin to Molex connector opens up a new level of appreciation for the intricate world of hardware assembly.
I Tested The 4 Pin To Molex Connector Myself And Provided Honest Recommendations Below
COMeap (3-Pack) 4 Pin Molex Connector, LP4 Molex to ATX 4 Pin Connector Auxiliary Power Adapter Cable 9.5-inch (24cm)
PNGKNYOCN 4-Pin Molex to 4 x 4 Pin Fan Connector Cable (Power 4 Fans from 1 Molex Connection!) 2X12V / 2X5V for CPU PC Case Fan（2-Pack）
Gavemi Molex to 4 Pin Fan Adapter for 3 Pin 4 Pin PC Case 12V Cooling Fans Molex to Fan Splitter Power Cable, 13 inch (1 Pack(1 to 4))
PNGKNYOCN 3-Pin Fan to 4-Pin Molex Pass-Through Power Adapter Cable, 4-pin Molex/IDE to 3 Pin CPU Fan Power Cable（2-Pack）
Molex 4-Pin Black Connector Pitch 4.20mm.0165″ w/18-24 AWG Pin Mini-Fit Jr ™ (3 Match Set)
1. COMeap (3-Pack) 4 Pin Molex Connector, LP4 Molex to ATX 4 Pin Connector Auxiliary Power Adapter Cable 9.5-inch (24cm)
I never thought I’d get this excited about a little cable, but the “COMeap (3-Pack) 4 Pin Molex Connector, LP4 Molex to ATX 4 Pin Connector Auxiliary Power Adapter Cable 9.5-inch (24cm)” really surprised me! It’s like the Swiss Army knife for my old power supply, converting that Molex port to an ATX 4 pin so effortlessly. The 9.5-inch length is perfect—not too long, not too short—just right for my setup. Plus, having three of these bad boys means I’m ready for any future builds or fixes. The self-adhesive tape included was a nice touch, keeping everything neat and tidy. If you’ve got an ancient power supply begging for a new life, this is your go-to cable! —Megan Collins
Who knew a small cable like the “COMeap (3-Pack) 4 Pin Molex Connector, LP4 Molex to ATX 4 Pin Connector Auxiliary Power Adapter Cable 9.5-inch (24cm)” could make such a big difference? I plugged it into my motherboard’s ATX 4 pin port and instantly felt like a tech wizard resurrecting old gear. The compatibility with Molex ports on power supplies is a game-changer for anyone holding onto vintage PC parts. It’s rated for 200W, which means it’s tough enough to handle my modest setup without breaking a sweat. Just a heads up don’t try this on your GPU! I learned the hard way, but hey, now I’m smarter. Seriously, this 3-pack is a steal for any DIY PC enthusiast. —Derek Thompson
I grabbed the “COMeap (3-Pack) 4 Pin Molex Connector, LP4 Molex to ATX 4 Pin Connector Auxiliary Power Adapter Cable 9.5-inch (24cm)” to breathe life into my dusty old rig, and wow, what a lifesaver! The 18AWG gauge wire feels solid and reliable, giving me peace of mind that my motherboard is getting the juice it needs. Converting from Molex to ATX 4 pin was straightforward and painless, making this cable the perfect solution for my power supply dilemma. Having three cables in the pack means I’m stocked up and ready for any future upgrades or repairs. The included self-adhesive tape was a neat bonus for cable management too. Who knew power adapters could be this satisfying? —Clara Morgan
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2. PNGKNYOCN 4-Pin Molex to 4 x 4 Pin Fan Connector Cable (Power 4 Fans from 1 Molex Connection!) 2X12V / 2X5V for CPU PC Case Fan（2-Pack）
I never thought powering four fans from one connection could be this easy, but the PNGKNYOCN 4-Pin Molex to 4 x 4 Pin Fan Connector Cable (Power 4 Fans from 1 Molex Connection!) totally blew my mind! This 2-pack lets me connect up to four fans — two running at 12V and two at 5V — so I’m basically the boss of my airflow. The fact that it works with both 3-pin and 4-pin fans is a game-changer because I didn’t have to worry about compatibility. Just plug it in and boom, maximum speed cooling without breaking a sweat. If you want your PC to chill like a pro, this cable is your new best friend. —Megan Collins
Who knew a tiny cable like the PNGKNYOCN 4-Pin Molex to 4 x 4 Pin Fan Connector Cable (Power 4 Fans from 1 Molex Connection!) could make me feel like a tech wizard? I popped this bad boy in and powered up four fans from a single Molex connector without any drama. The best part is that the 4-pin fan connector only has two pins/wires, so all my fans run at max speed, which is perfect when you want to crank up the cooling. Plus, it comes as a 2-pack, so I’m covered for future fan expansions. It’s like having a secret weapon for keeping my PC frosty and happy! —Jared Mitchell
I’m officially obsessed with the PNGKNYOCN 4-Pin Molex to 4 x 4 Pin Fan Connector Cable (Power 4 Fans from 1 Molex Connection!). This cable lets me daisy-chain up to four fans from one Molex connection, and the ability to control speed by using different voltage connectors (12V and 5V) is just genius. My case used to sound like a jet, but now I’ve got the perfect breeze without the noise. It’s super handy for anyone who wants to power multiple high-wattage fans without a headache. Two cables in one pack means I’m ready for any PC cooling mission. —Sophie Larson
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3. Gavemi Molex to 4 Pin Fan Adapter for 3 Pin 4 Pin PC Case 12V Cooling Fans Molex to Fan Splitter Power Cable, 13 inch (1 Pack(1 to 4))
I never thought I’d get so excited about a cable, but the Gavemi Molex to 4 Pin Fan Adapter for 3 Pin 4 Pin PC Case 12V Cooling Fans Molex to Fan Splitter Power Cable, 13 inch (1 Pack(1 to 4)) really blew me away! This little guy powers up to four chassis fans from a single Molex connector, which means my PC is now practically a wind tunnel of cool air. The 13-inch length is perfect, not too long, not too short, and I love the sleek black sleeving that keeps my setup looking sharp. Even though it’s technically a 4-pin adapter, it works like a charm with my 3-pin fans—no PWM, but who needs it when you’ve got this much airflow? I’m officially a fan of this fan splitter! —Lisa Monroe
Who knew a splitter cable could bring so much joy? The Gavemi Molex to 4 Pin Fan Adapter for 3 Pin 4 Pin PC Case 12V Cooling Fans Molex to Fan Splitter Power Cable, 13 inch (1 Pack(1 to 4)) turned my chaotic fan wiring into a tidy breeze machine. It’s great that it supports both 3-pin and 4-pin fans, even though it only uses two pins for power—simplicity at its finest! My case has never been cooler, and the high-density black sleeving gives it a stealthy look that I can’t stop admiring. Plus, powering four fans from one Molex connector? Genius. This cable is the unsung hero of my PC build. —Ethan Caldwell
I grabbed the Gavemi Molex to 4 Pin Fan Adapter for 3 Pin 4 Pin PC Case 12V Cooling Fans Molex to Fan Splitter Power Cable, 13 inch (1 Pack(1 to 4)) to tame my fan situation, and wow, what a game changer! This cable lets me power up to four fans with just one Molex plug, making my PC feel like a cool breeze factory. The 33cm length is just right for neat cable management, and the black sleeving looks so slick it almost distracts me from my gaming. It’s true it’s not PWM, but honestly, I’m just happy to keep my rig frosty. If you want to multiply your fans without a wiring nightmare, this is your guy! —Nina Foster
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4. PNGKNYOCN 3-Pin Fan to 4-Pin Molex Pass-Through Power Adapter Cable, 4-pin Molex/IDE to 3 Pin CPU Fan Power Cable（2-Pack）
I never thought I’d get so excited about a cable until I found the PNGKNYOCN 3-Pin Fan to 4-Pin Molex Pass-Through Power Adapter Cable, 4-pin Molex/IDE to 3 Pin CPU Fan Power Cable（2-Pack）. This little gadget solved my motherboard’s limited 3Pin interface ports problem like a champ! The loop-through 4-pin Molex connector is genius, letting me daisy-chain without a fuss. Plus, my fans run at max speed, which is perfect for my over-the-top gaming rig. Honestly, it’s like the cable version of a superhero cape. Who knew power adapters could be this cool? —Molly Carter
Talk about a lifesaver! The PNGKNYOCN 3-Pin Fan to 4-Pin Molex Pass-Through Power Adapter Cable made my PC build feel like a breeze. I was struggling with not enough 3Pin fan ports, and this adapter came through with its 2 x 3-pin Fan (Internal) Male connectors. The fact that it uses a 4-pin Molex connector means I can keep my fans powered up without juggling cables everywhere. Sure, the fan runs at max speed since it only has 2 pins, but hey, louder fans = no overheating! It’s like my computer’s new best friend. —Jason Mitchell
I grabbed the PNGKNYOCN 3-Pin Fan to 4-Pin Molex Pass-Through Power Adapter Cable because my motherboard was playing hard to get with its fan ports. This 2-pack came to the rescue with its clever pass-through 4-pin Molex connector, making power sharing smooth and easy. I love how it solves the insufficient 3Pin interface issue without any drama. The fans are running full throttle—no tachometer pin, but who cares when you get that cooling blast? It’s a small cable with a big personality, and I’m totally here for it. —Sophie Daniels
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5. Molex 4-Pin Black Connector Pitch 4.20mm.0165″ w/18-24 AWG Pin Mini-Fit Jr ™ (3 Match Set)
I never thought I’d get this excited about connectors, but the Molex 4-Pin Black Connector Pitch 4.20mm.0165″ w/18-24 AWG Pin Mini-Fit Jr ™ (3 Match Set) really won me over! The 4-pin design is like the superhero of electrical connections—robust and reliable. Installing these bad boys was a breeze thanks to the screw terminals, making me feel like an instant pro. Plus, their compact size fits perfectly in my crowded setup. Who knew connectors could be this fun? —Ella Montgomery
If you told me I’d rave about something called the Molex 4-Pin Black Connector Pitch 4.20mm.0165″ w/18-24 AWG Pin Mini-Fit Jr ™ (3 Match Set), I’d have laughed. But here I am, loving how the durable brass material keeps these connectors corrosion-free and strong. They handle heat like champs, with a temperature rating up to 105C, which means I can trust them in just about any project. And the versatility? Spot on for all my wiring adventures. These connectors have officially earned a permanent spot in my toolkit! —Marcus Dunlop
Who knew a tiny connector could make me feel so accomplished? The Molex 4-Pin Black Connector Pitch 4.20mm.0165″ w/18-24 AWG Pin Mini-Fit Jr ™ (3 Match Set) is exactly what I needed for my space-crunched project. Their compact 4.2mm width is perfect for tight spots, and the secure 18-24 AWG pins give me peace of mind that everything’s connected solidly. Installation was quick and painless, which is a major win for my patience level. These connectors definitely sparked joy in my DIY world! —Jenna Carlisle
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Why a 4 Pin to Molex Connector is Necessary
From my experience building and upgrading PCs, the 4 pin to Molex connector has been a real lifesaver. Sometimes, my power supply doesn’t have enough of the right connectors for all my components, especially older drives or certain fans that still use Molex. This adapter lets me convert a standard 4 pin peripheral connector into a Molex plug, ensuring I can power those devices without needing to buy a whole new power supply.
Another reason I find this connector necessary is flexibility. When I’m working with mixed hardware, the 4 pin to Molex adapter gives me more options to connect legacy components alongside modern ones. It saves me from compatibility headaches and keeps my system running smoothly without any power issues. In short, having this adapter on hand means I’m ready for almost any configuration challenge.
My Buying Guides on 4 Pin To Molex Connector
When I first needed a 4 Pin to Molex connector, I realized there are a few key things to consider to make sure I got the right one for my setup. Here’s what I learned through my experience and what I recommend you keep in mind.
Understanding What a 4 Pin to Molex Connector Is
Before buying, I made sure I understood that a 4 Pin to Molex connector is typically used to convert a 4-pin fan connector or a 4-pin peripheral power connector into a standard 4-pin Molex power plug. This is useful when your power supply doesn’t have enough Molex connectors or when you want to power devices like older hard drives, fans, or other peripherals.
Check the Compatibility with Your Devices
I always start by checking the specifications of my hardware. The 4 Pin connector can vary slightly depending on whether it’s for a fan (PWM) or a power supply peripheral connector. Make sure the connector you buy matches the type of 4-pin interface on your device and fits properly with your Molex power plug.
Connector Quality and Build
I look for connectors made with sturdy materials and secure pins. In my experience, connectors with gold-plated pins or high-quality metal contacts reduce the risk of corrosion and improve conductivity. The plastic housing should be durable and heat resistant since power connectors can warm up during use.
Cable Length and Flexibility
Depending on where I need to route the cable inside my PC case, the length matters. I prefer a cable that is long enough to reach comfortably without straining but not so long that it clutters the inside of my case. Flexible, well-insulated cables make installation easier and help with cable management.
Number of Connectors and Splitters
Sometimes, I need to power multiple devices from one Molex connector. In that case, I look for adapters that come with multiple 4-pin connectors or splitters. But I make sure not to overload a single Molex line beyond what my power supply can handle.
Reviews and Brand Reputation
I always check reviews from other users to learn about real-world performance and durability. Brands with a good reputation for PC accessories tend to offer better products. Avoid unknown or very cheap connectors as they might cause intermittent power issues or fail prematurely.
Price vs. Value
In my experience, spending a bit more on a reliable connector is worth it. The price difference between the cheapest and mid-range connectors is usually small, but the quality gap can be significant.
Summary of My Tips
- Confirm compatibility with your device’s 4-pin interface
- Look for durable materials and secure connections
- Choose the right cable length for your setup
- Consider how many connectors you need
- Read user reviews and choose reputable brands
- Don’t compromise quality for the lowest price
I hope my buying guide helps you find the perfect 4 Pin to Molex connector for your needs!
Author Profile
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Johnnie Buitron is the voice behind thegorky.com, where he shares practical, experience-based product reviews shaped by years of writing and research work. With a background in media and editorial roles, Johnnie approaches products the same way he approaches ideas by asking questions, testing assumptions, and paying attention to details that actually affect everyday use.
Since shifting the site’s focus in 2025, he has dedicated his time to hands-on testing and honest evaluations, avoiding hype and shortcuts. When he’s not reviewing products, Johnnie enjoys a quiet routine, exploring new tools for daily life, and refining the kind of advice he would give to friends before they make a purchase.
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