Can i use this to power ssd?

No, this cable is meant to plug into PCI connections which use a 6 pin connector. If you do not have enough sata power connectors coming from your power supply, you may need to look into a sata cable Y/splitter such as this: https://www.amazon.com/StarTech-com-Latching-Power-Splitter-Adapter/dp/B00BBDL17G/ref=sr_1_3?ie=UTF8&qid=1516372194&sr=8-3&keywords=sata+y+adapter or even a molex (4-pin) to sata adapter cable like this: https://www.amazon.com/Cable-Matters-Molex-Power-Adapter/dp/B00STNUB04/ref=sr_1_3?s=electronics&ie=UTF8&qid=1516372229&sr=1-3&keywords=molex+to+sata

So do I also need the cable that plugs into the sata port on my motherboard? I'm using an Optiplex and have a 75w card that has 6 pin..?

RESPONSE FROM MANUFACTURER - CABLE MATTERS: This 6-pin PCIe to 15 PIN SATA female to male cable provides a convenient solution for low-power video graphics cards that can be powered from a single SATA power connection. It connects a PCIe video card to a power supply with a spare SATA power connection. If your motherboard can provide power to the video card through a SATA port, then yes, please have it connected to the SATA connector of this cable. Please feel free to let us know if you have any further questions by contacting us through Amazon's messaging center. Open the product page, click on "Sold by Cable Matters" and then "Ask a Question”. Cable Matters Support Team

Is this safe to use on the same psu port as hard drives/ssd's, via a daisy-chaining sata cable? am i going to fry a drive by pulling 75w past it?

RESPONSE FROM MANUFACTURER - CABLE MATTERS: No, the max power rating for this 6 Pin PCIe to Molex Power Cable is 54W, so it's not safe to use this cable in your application. Please feel free to let us know if you have any further questions by contacting us through Amazon's messaging center. Open the product page, click on "Sold by Cable Matters" and then "Ask a Question”. Cable Matters Support Team

What power is it rated for? can it support the full 75w for a 6-pin pcie or is it limited to less because it is drawing from a single sata connector?

I used several like to 6 - 8 of them to supply 75w to 6pin power for several gpu's & had no issues while drawing full power for 6-8 months non stop. I made sure to use a ''psu calculator online'' to make sure my power supply could handle it. If you're only using a few most likely you won't have to worry about anything.

Brand	Cable Matters
Connector Type	Pcie, Sata
Cable Type	SATA
Compatible Devices	PC
Recommended Uses For Product	Connecting a PCIe video card to a power supply with a SATA power connection
Color	Black
Connector Gender	Male-to-Female
Data Transfer Rate	6 Gigabits Per Second
Shape	Round
Number of Pins	6
AC Adapter Current	4.5 Amps
Unit Count	1.33 Feet
Item Weight	22.68 g
Specification Met	Yes
Indoor/Outdoor Usage	Indoor, Outdoor
Wattage	54 watts
Maximum Voltage	12 Volts
Manufacturer	Cable Matters
UPC	682017351971
Item model number	104035x2
Item Weight	0.8 ounces
Product Dimensions	7 x 4.5 x 0.2 inches
Item Dimensions LxWxH	7 x 4.5 x 0.2 inches
ASIN	B01DV1Z1ZI
Is Discontinued By Manufacturer	No
Date First Available	April 5, 2016

6-Pin PCIe to SATA Power Cable

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Common Questions