Can i use this adapter to power up my fan sytem that runs on the old 4 pin power?

That is exactly what we used it for. They worked well and the PC is running well.

Can i use these to power my motherboard if psu doesnt have 8pin

Hi, I'm not sure whether you can use these to power a motherboard (you'll have to check with your motherboard manufacturer first). Please note though these are 8 pin connecters, not 6+2 pin as answered below. These don't split to be used either as 6 pin or 8 pin if that makes sense. Thanks

Can I use these to power up the case fans? The fans says 12v and has a female molex connector?

No, unfortunately this is not the intended use of this cable. This power cable converts 2 female molex cables to one 8-pin PCIe cable. You can use your own PSUs molex MALE cables to power up your case fans, you do not need to buy this cable at all.

are these safe to use to power an SSD and a fan contoller ?

These are designed for graphics cards. You use 2 mulex inputs to one graphics (pcie) output. In theory there is no reason why you can't drive other devices from these outputs, but the preferred way would be a supplier and use either a mulex (large white 4 pin connectors) splitter or sata splitter (black long thin connectors). Hope this helps

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8-Pin PCIe to 2x Molex Power

Product ID: 135704173

Details

Brand
Cable Matters
Cable type
PCI-E
Compatible devices
PC
Connector type
PCI
Special feature
Compatible

⚡Supports up to 120W power

🔌8-Pin PCIe connector

🔗Dual Molex connectors for stable power

Description

⚡ Power Up Your Rig Without the Upgrade FOMO!

COMPACT 10 CM LENGTH - Perfectly sized for clean, clutter-free builds and optimal airflow.
UNIVERSAL COMPATIBILITY - Works seamlessly with top GPU brands like ASUS, EVGA, Gigabyte, Sapphire, and XFX.
SECURE LATCH PC IE CONNECTOR - Prevents accidental disconnections during intense gaming or work sessions.
DUAL MOLEX DESIGN FOR BALANCED POWER - Connects to separate rails to ensure stable, reliable GPU power delivery.
POWER YOUR GPU WITHOUT UPGRADING PSU - Save hundreds by adapting older PSUs to modern GPUs effortlessly.

The Cable Matters 2-Pack 8-Pin PCIe to Dual Molex Power Cable offers a smart, cost-effective solution to power high-performance graphics cards using older power supplies. Each 10cm cable features a secure 8-pin PCIe connector and dual Molex connectors designed to draw stable power from separate rails, supporting up to 120 watts. Compatible with leading GPU brands, this robust adapter prevents costly PSU upgrades while maintaining reliable power delivery for demanding gaming and professional workloads.

Specifications

ASIN	B07QFSL8VW
Best Sellers Rank	5,366 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 129 in Power Cables
Brand	Cable Matters
Cable Type	PCI-E
Cable type	PCI-E
Colour	Multicoloured
Compatible Devices	PC
Compatible Phone Models	No Compatible Phone Models
Compatible devices	PC
Compatible phone models	No Compatible Phone Models
Connectivity Technology	PCI, PCIe
Connector Gender	Male-to-Female
Connector Type	PCI
Connector type	PCI
Country Of Origin	China
Customer Package Type	sealed anti-static bag or box
Customer Reviews	4.5 out of 5 stars 936 Reviews
Gauge	18.0
Indoor Outdoor Usage	Indoor
Item Length	11 Centimetres
Item Shape	Round
Item Weight	0.05 Kilograms
Manufacturer	Cable Matters
Manufacturer Part Number	104043x2-E
Maximum Current	10 Amps
Maximum Voltage	12 Volts
Model Name	104043
Model Number	104043x2-E
Number of Items	2
Number of Pins	8
Other Special Features of the Product	Compatible, robust
Recommended Uses For Product	Power Video Graphics Cards
Set Name	Fixed 8Pin - 2x Molex
Special feature	Compatible, robust
Specification Met	RoHS
Wattage	120 watts

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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