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We recommend 5V 2.0Amp 5-Pin Style AC Power Adapter for the OWC Mercury Elite single. (Mfr P/N: MNEPWR2A) from Other World Computing for $17.99 as a suitable alternative.

OWC Mercury Elite/Neptune Power Adapter

3.0Amp 5-Pin Style Power Adapter

Power Adapter compatible with certain OWC Mercury Elite, OWC Mercury Elite-AL, OWC Mercury Elite RAID FW800, OWC Neptune, Elite Pro Dual SATA, Mercury Pro FireWire 5.25" Optical, Neptune Optical, and NewerTech miniStack storage solutions/enclosures with a DC 5V/12V 2A or 3A Power Input accepting a 5-pin style connector.

For your convenience, a compatibility chart is provided below to ensure proper product selection. Please be sure that your drive enclosure has this port before ordering.
Note: This part includes the transformer to device portion of the power supply only. Power cords sold separately.

Product Specifications:

AC Input

  • 100-240VAC @50-60Hz / 1.2Amp

DC Output

  • +5V/3.0Amp, +12V/3Amp

Output Connection

  • 5-Pin DIN M

Power Indicator

  • Yes

Brick Dimensions

  • 4.5" x 2.25" x 1.5"

Cord Length

  • 4.0 feet (122cm)


  • 12.2 oz.


  • UL / CUL / TUV / CE / FCC


Manufacturer provided specifications for Other World Computing p/n OWCMNEPWR3A UPC#: 718122780570
The Power Adapter is compatible with... Learn how to find your Mac's model ID
OWC Mercury Elite Pro RAID
OWC Mercury Elite Pro RAID Dual-Drive Storage Solutions
OWC Mercury Pro FireWire Optical
OWC Mercury Pro FireWire 5.25" Optical Solutions
OWC Mercury Elite Pro Dual SATA
OWC Mercury Elite Pro Dual SATA Storage Solutions*
*Double check your connection. Updated models may use a different power supply. Make certain you have a 5 pin power connector before ordering!

Customer Ratings

Write a Review 4.7 / 5 7 out of 7 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: ShinyGuppy-72409
Rating: 5/5 Exactly what I was looking for! June 7, 2021 Great company to order from.

I would recommend this item to a friend!

Verified Buyer
Reviewer: ErikRichard Location: Aarhus, Denmark Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Large durability June 10, 2018 I bought the external power supplies which can be used with more of the Mercury and NewerTech enclosures, because this type of PSU cannot be bought here in Europe... I needed one because the external PSU for one of my +10 years old Mercury Elite Dual Bay ATA enclosures sudenly died.

I would recommend this item to a friend!

Verified Buyer
Reviewer: MfgStories Location: New Hampshire Age: Over 65 Experience Level: Power User
Rating: 5/5 Worked Perfectly December 27, 2017 I had somehow lost the power adapter to my older Mercury Drive. I did not have much information to go on to figure out which power adapter to order. The folks on the phone ordering line were very helpful and patient. We eventually figured out the correct PA to order. The order arrived on time and worked perfectly! Great service as always!

I would recommend this item to a friend!

Verified Buyer
Reviewer: GeneonMAC
Rating: 5/5 Excellent Customer Service November 30, 2016 Needed to replace the power source for an older OWC External Drive. The CSR was terrific in helping me find the correct power source, as the connections were also "dated". He was patient and got me through the process. The power source arrived promptly and worked perfectly. A lot easier than trying to replace the drive.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 4/5 This has been a returning problem over the years May 30, 2015 I have had to replace two to three of these power bricks over the years because of failure. The hard drives keep on working just fine the the power supply fails. My friend has also had to replace one.

I know these are old devices and I am sure that OWC is supplying newer and better quality items now.

I still trust OWC for my computer accessory products. They stand behind their warranty and they make very good products.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Dallas, TX Age: Over 65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Perfect Replacement November 16, 2014 My original adapter failed, and I needed an exact replacement. Fortunately, I bought the original drive/adapter from OWC, so they had the requisite adapter. The replacement fit and worked perfectly.

One issue: It was unclear from the OWC webpage whether or not I needed to purchase a 110VAC power cord, so I did. However, it turned out that 1) my original power cord could be used with the replacement adapter, and 2) the new power cord I ordered didn't fit, anyway. But, it wasn't worth the effort and postage to return it, so I kept it.

I would recommend this item to a friend!

Response from OWC, Marketing November 19, 2014 The page has been redesigned since you originally made your purchase to make which OWC / NewerTech drives this adapter is compatible with easier to determine as well as list out the available options for power cords which includes international cables now also. We’re always looking to improve your purchase experience with OWC. Thank you for the comment.
Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Philippines Age: 35-44 Experience Level: Power User Owned Product: over 6 months
Rating: 4/5 Works as expected June 22, 2014 Since I'm buying this, obviously it means I'm replacing a similar product. Quality is nothing special, I can only hope this replacement last longer than the unit it replaced. Bought it from OWC to ensure its compatible and identical to the one it replaced.

I would recommend this item to a friend!

OWC Mercury Elite 3.0Amp 5-Pin Power - Transformer only Mfr P/N: OWCMNEPWR3A OWC SKU: OWCMNEPWR3A 1 Year OWC Limited Warranty
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