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Description
OWC / Other World Computing Mercury Elite Pro Quad 48TB 4-Bay USB 3.1 Gen 2 Type-C RAID Array (4 x 12TB)4 x 12TB 7200 rpm SATA III 3. 5" HDDs 4 x 3. 5" 2. 5" SATA III Drive Bays USB 3. 1 Gen 2 Type C Interface Supports RAID 0, 1, 0+1, 4, and 5 Preconfigured as RAID 5 Software RAID Controller Sequential Reads up to 527 MB s Sequential Writes up to 695 MB s Built In Cooling Fan Windows & Mac Compatible Add 48TB of USB 3. 1 Gen 2 Type C storage to your compatible Windows or Mac system with the Mercury Elite Pro Quad 48TB 4 Bay USB 3. 1 Gen 2 Type C RAID
- 4 x 12TB 7200 rpm SATA III 3.5" HDDs
- 4 x 3.5"/2.5" SATA III Drive Bays
- USB 3.1 Gen 2 Type-C Interface
- Supports RAID 0, 1, 0+1, 4, and 5
- Preconfigured as RAID 5
- Software RAID Controller
- Sequential Reads up to 527 MB/s
- Sequential Writes up to 695 MB/s
- Built-In Cooling Fan
- Windows & Mac Compatible
Add 48TB of USB 3.1 Gen 2 Type-C storage to your compatible Windows or Mac system with the Mercury Elite Pro Quad 48TB 4-Bay USB 3.1 Gen 2 Type-C RAID Array (4 x 12TB) from OWC / Other World Computing . This array is preconfigured as RAID 5 via included SoftRAID XT software. 48TB also provides you with plenty of space to store files such as music, photos, movies, and documents. This array provides sequential compressible read speeds of up to 527 MB/s, sequential compressible write speeds of up to 695 MB/s, sequential incompressible read speeds of up to 513 MB/s, and sequential incompressible write speeds of up to 488 MB/s.
Within the array are four SATA III drive bays that can each house a single 3.5" or 2.5" drive using the included drive brackets. Each drive bay has a 12TB 7200 rpm SATA III 3.5" hard drive, each of which has a 256MB cache, for a total system cache of 1TB. The array is software-configured as RAID 5, which provides a good balance of performance and redundancy. It can be configured as RAID 0, 1, 0+1, 4, and 5, each of which provides performance, data redundancy, or both.
This volume will be recognized on systems running OS X 10.6 and later, as well as Windows 7 and later. Connectivity to your host system is achieved using an integrated 10 Gb/s USB 3.1 Gen 2 Type-C port, and both USB Type-C to Type-C and USB Type-C to Type-A cables are included to help ensure compatibility with modern and legacy systems. To help ensure a smooth operating environment, the array is built using heat-dissipating aluminum, uses a cooling fan, and its included 100-240 VAC power supply runs at 50/60 Hz to help ensure worldwide compatibility. Also included is a power cable and two front panel keys.
General Features
- The Flexibility of USB Type-C
- The Mercury Elite Pro Quad's USB Type-C interface delivers 10 Gb/s USB 3.1 Gen 2 bandwidth and works with most USB Type-C or Thunderbolt 3 Mac or Windows system. Simply connect the Mercury Elite Pro Quad via the included USB Type-C cable to experience next-level performance. If your computer doesn't feature USB Type-C connectivity, the included USB Type-C to USB Type-A cable brings backward compatibility for machines with legacy USB ports.
- Capacity without Compromise
- Compatible with 2.5" and 3.5" drives, the Mercury Elite Pro Quad's four universal drive bays give users access to 48TB of storage. With this level of capacity and drive flexibility, you will not have to compromise when it comes to your storage.
- Speed, Storage, and Security with SoftRAID
- The Mercury Elite Pro Quad features advanced RAID capabilities, letting you choose the best option for your workflow. Whether you want massive capacity through a single large array, need maximum performance up to 527 MB/s, or redundancy to keep your data secure, the Mercury Elite Pro Quad gives you the power of choice with OWC's proprietary SoftRAID engine or Windows-supported RAID modes. The Mercury Elite Pro Quad is also available in a RAID-ready model, so you can install the RAID software of your choice.
- Designed for Professionals, By Professionals
- Every detail was considered when designing the Mercury Elite Pro Quad. Built with a heat-dissipating aluminum enclosure, a whisper-quiet fan, and vibration-absorbing feet, the Mercury Elite Pro Quad runs cool and quiet, making it suitable for noise-sensitive environments. Front-facing LEDs provide an instant drive-activity snapshot, while the front panel access lock keeps your drives safe. You can even secure the entire drive with the rear-mounted Kensington compatible lock slot. On top of that, this model undergoes OWC's multi-hour drive "burn-in" performance certification procedure to ensure that your drive arrives operating properly and ready to perform.
- Reliability & Support
- Like all OWC drives, the Mercury Elite Pro Quad is built to the highest standards of reliability and performance. Because 100% reliability is always the goal, Mercury Elite Pro Quad is rigorously quality tested, and backed by an OWC limited 3-year warranty and 24/7 customer support.
UPC: 812437029307
In the Box
OWC / Other World Computing Mercury Elite Pro Quad 48TB 4-Bay USB 3.1 Gen 2 Type-C RAID Array (4 x 12TB)
OWC / Other World Computing Mercury Elite Pro... specs
| Storage Capacity | 48 TB |
| Connection Interface | 1 x USB 3.1 Gen 2 (USB Type-C) |
| Maximum Read Speed | Not Specified by Manufacturer |
| Sequential Read Speed | 527 MB/s |
| Maximum Write Speed | Not Specified by Manufacturer |
| Sequential Write Speed | 695 MB/s |
| Pre-Format | Not Specified by Manufacturer |
| Internal Drive | |
|---|---|
| Internal Interface | SATA III |
| Type | Hard Disk Drive |
| Rotational Speed | 7200 rpm |
| Form Factor | 3.5" |
| Cache Memory | 256 MB |
| Mean Time Between Failure | 2,500,000 Hours |
| External Enclosure | |
|---|---|
| Security Features | Kensington Security Slot, Lockable Bay Door |
| AC Input Power | 100 to 240 VAC, 50 / 60 Hz |
| Material | Aluminum |
| Cooling System | Fan/Passive Combo |
| Environmental Resistance | Not Specified by Manufacturer |
| Operating Temperature | 32 to 104°F / 0 to 40°C |
| Storage Temperature | -4 to 158°F / -20 to 70°C |
| Dimensions (L x W x H) | 9.4 x 5.3 x 7.3" / 23.9 x 13.5 x 18.5 cm |
| Weight | 7.9 lb / 3.58 kg |
| Packaging Info | |
|---|---|
| Package Weight | 19.1 lb |
| Box Dimensions (LxWxH) | 15.4 x 14.3 x 10.9" |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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
4.5 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Siless Hybrid 3-in-1 - Far Exceeded my Expectations!!!
Model: SLH20025
I recently installed the Siless Hybrid 3-in-1 sound deadening mat in my vehicle, and I’m genuinely impressed. For just $80 for 25 square feet, this product delivers performance that rivals materials costing twice as much — and with far less hassle. If you're on the fence......Just buy it! You will not be disappointed.
Easy to Install: Unlike traditional sound deadening products that are stiff, sharp, and temperature-sensitive, this mat is soft, flexible, and easy to work with. I cut it cleanly with regular scissors and pressed it into tight spaces using just my fingers, so if in you don't have a roller or install tool, a good pair of scissors and your hands can get the job done. With other brands like Dynamat, the aluminum layer often leaves micro cuts on your hands and tears up your fingertips, but Siless does not due the acoustic layer being on top and above the aluminum layer that holds the butyl layer. So, it's very easy on your hands.
Even in cooler temperatures (around 50°F), I had no trouble applying it but it goes on better heated. If warm outside, I would leave the entire box out in the sun for at least 30 minutes when it's warm or heats it's very pliable and easy to mold. Make sure its where you want it because once applied it's not ever falling off. and it became even more pliable and easy to mold. No heat gun, no mess — just straightforward application.
I installed 40–50 square feet throughout the interior, covering everything except the headliner and the flooring forward of the rear seat. The difference in cabin noise is astonishing. I can turn my radio up concert loud with gut-punching bass, and from outside the car, it sounds like a factory sound system at mid volume. I was blown away by how well it contains sound — both inside out and outside in.
My exhaust is pretty aggressive and now is barely audible from inside the cabin. While driving, it almost sounds like a stock factory setup. The Siless matting actually changed the driving experience and feels refined.
If you're skeptical about sound deadening gimmicks, I get it, but this is the first product I've used and when I needed more, I went Stright to the 3 in 1 Hybrid matting and purchased it again. I love researching before buying and that's very uncommon for me to do.
Note: Proper installation is key, and it does take time and patience. But if installed correctly and in the right places, it works better previously used from paint-on sound deadening to Dynamat.
Update Nov, 2025
After using it this in 4 separate vehicles now. I feel the Siless’s 3 in 1 Hybrid has nailed it for best budget deadener that is better than dynamat extreme in performance and installation
Protip: buy a roll of 2-3” aluminum tape and tape the seams. After trimming the edges tend to very sticky between the panels. I ran a strip of aluminum tape over the seems to create a better seal and true moisture
I used it on four vehicles now and have I have not been paid to review and purchased every order myself.
3 in 1 Hybrid deadener by Siless is the best all around easy to apply sound deadner period!
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Reviewed in the United States on September 29, 2025
★★★★★ 5
Top quality
Model: SLH20025
This Siless Hybrid 3-in-1 sound deadening mat is easy to work with and feels high-quality. The butyl material is thick and pliable, making it simple to cut and fit into doors, floors, or panels.
After installation, road noise and vibrations are noticeably reduced, and it also seems to improve the overall cabin feel. No bad smell.
At 25 sq ft per roll, it’s a good value for anyone looking to dampen noise and improve car acoustics. Overall, a solid, effective option for automotive soundproofing. Used on a Fiesta ST.
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Made a big improvement in cabin noise—highly recommend
Model: SLH20025
Siless Hybrid made a huge difference in reducing noise in the floor of my truck cabin. In some areas, there was basically just bare sheet metal between the inside and outside, so adding this really helped the truck feel more solid and noticeably quieter on the road.
I used Kilmat on the doors, and honestly I wish I had used Siless Hybrid there too, but it was too late by the time I realized the difference. This material is very sticky, easy to cut, and simple to apply, which made the install pretty smooth.
Just a heads-up: the tacky side gets messy and will bond to clothing really easily, so be careful during installation. Overall, I’d definitely buy it again—great product with real results.
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Reviewed in the United States on December 2, 2025
★★★★★ 5
Very good product at a fair price
Model: SLH20025
Very good sound deadener and heat shield, it is a bit sticky to work with, but easy to shape and cut
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Reviewed in the United States on April 19, 2026
★★★★★ 5
I wish I had Siless 20 years ago!!!
Model: SLH20025, Model: SLH20025
I have installed all kinds of insulation in vehicles over many years. I only needed to purchase 2 boxes to complete the entire interior siding of my 2025 chevy express, what a great value! I wanted to insulate my locksmith van for sound and heat. The sound reduction virtually eliminated the road noise. These panels also look amazing. It got up to 110F in the sun with the doors closed. After adding Siless insulation the temperature maxed out at 97F. That is a massive difference. Plus, I didn't even finish with the roof before testing. Siless Hybrid 3in1 was extremely easy to cut and adhere onto metal panels. I'm impressed with the quality of the individual panels and the adhesive is not toxic smelling compared to some others. My favorite thing about these panels is you can actually take them off and readjust them before they finally stick and they do not leave any black residue behind when you pull them up to adjust them. All I needed was a heat gun, knife and a roller to complete this job. The size of each panel is perfect, you can handle them with ease. I probably won't need your product again for a while, but when I do I will definitely be back.
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Reviewed in the United States on September 21, 2025