The Allegro 2-Port USB 3.2 Gen 2 Type-C PCIe 3.0 Card from Sonnet supports data transfers at up to twice as fast as USB 3.2 Gen 1, and can also deliver 15W of power per port to USB Type-C bus-powered devices. It adds two 10 Gb/s USB Type-C (USB 3.2 Gen 2) ports to your Mac Pro with PCIe slots, Windows PC, Linux computer, or Thunderbolt to PCIe card expansion system. This PCIe computer card supports data transfers up to 960 MB/s when connected to a USB Type-C SSD RAID device. The ports communicate with the host that 3A of VBUS current is available, enabling this solution to support USB Type-C bus-powered SSDs and SSD RAID devices that need 15W during demanding write operations.
The Professional's Source Since 1973
- Adds Two 10 Gb/s USB Type-C Slots
- Delivers 15W of Power per Port
- Protected Ports
- Resettable Fuses
Sonnet Allegro Overview
- 2Regulates Power to Each Port
- 3Resettable Fuses
- 4PCIe Auto-Negotiation
- 5Optimized for Thunderbolt
- 6Easy Installation
Sonnet Allegro Specs
|Inputs/Outputs||2 x USB-C 3.1/3.2 Gen 2|
|USB Bus-Power Support||5 VDC at 3 A, 15 W per Port|
|Expansion Slot Compatibility||PCIe 3.0 x4|
|USB Support||USB Attached SCSI Protocol|
|OS Compatibility||macOS 10.10 |
macOS 10.12 or Later
Windows Server 2008
Windows Server 2012
Windows Server 2016
Linux 4.12 or Later
*As of August, 2020: Check with manufacturer for the most up-to-date compatibility
*as per Manufacturer
|Package Weight||0.285 lb|
|Box Dimensions (LxWxH)||8.6 x 5.4 x 1.35"|
Sonnet Allegro Reviews
Mechanical Issues, may need mod to computer to work properly
The install was very easy once the computer was Dremel ground so cable end could seat. I later cleaned this up but showing where you may have to remove some metal on the computer so that cables can seat into the USB C port. USB C is very critical to fully seat for a proper connection. Others have also run into this and simply moved the board over a bit to make it fit right. However, I wanted a more permanent solution and secure the card into the computer properly. Electrically, the board worked perfect for me. I have an ASUS mother board vintage (P5 Q?) about 8 years old. It installs into a standard slot, not the PCIE (express slot). I use this for the C-Fast card used in my 1DX Mk2, works great for the transfer of data. Seems very fast used with the Xcellon CR CFA312 card reader.
It does exactly what it should.
Worked on my PC, just plugged it in, no issues. I didn't check speeds, but downloading a XQD card went very quickly!
Seamless USB C Addition
This card allowed me to seamlessly install two USB-C jacks into my older Intel Skylake based machine. I didn't have any issues with drivers, it was recognized and worked right away.
Works as it should
I installed it, Windows 10 recognized it, and it works as it should. Faster backup for my media files and keeps the workflow with my older PC still viable.
Makes the work well
Just pug and play, very fast and I like the services that Sonnet have.
I love it.
My mid-2010 Mac Pro is aging. That, and my ext. backup drives, only have FW800 and USB2. So, I bought this PCIe card and two USB-C external drives to backup all my stuff and futureproof me. Installing this card was an absolute breeze. (There's a great YouTube how-to.) Then, I backed up to one of my new USB-C drives and it was smooth and seamless. I'm very happy! Something I learned though, that is NOT the fault of the card, is that my Mac's ROM only recognizes a USB-C PCIe card after boot up, so you can't boot, say, a clone of your internal drive with it. That may be important to know for some people. Also, I thought I might see much faster transfer speeds, but the speeds were just a little faster than FW800. Could be because my new USB-C drives are only 540rpm, I'm not sure. So maybe don't expect dazzling speed improvements. I highly recommend this card.
Great product, poor instructions
I am extremely happy with this PCIe card which added two USB 3.2 Type C ports on the back panel of my Z590 motherboard. It appears to be well made and fit perfectly in the bottom expansion slot, which is configured as 16x4. It requires a longer slot than the extremely short ones which are called 1x1 I believe. The instructions aren't clear on this or much else, they basically say put the card in a slot that fits and it should work. And that's true, apparently. Still a little more useful information would probably be helpful for people with installation problems. I had no problems at all and using a USB C to C cable I'm getting consistent transfer speeds over 500 MB/Sec. Surprisingly, this speed is unchanged using a USB C to A cable, as long as it's the correct cable for USB 3.1 or 3.2. The older USB 3.0 cables don't work properly and using the wrong cable reduced the data transfer speed from 520 MB/sec to 30 MB/sec. So, you need the correct cables. In most cases, the read or write speed of the devices being used will be the speed limiting factor, rather than the port itself. For example, my 7200 RPM NAS drives deliver about 220 MB/Sec, so that's all you're going to get through this port. A 2.5 inch SATA SSD will deliver about 550 MB/sec, so this port will just about keep up with that. NVME drives running at over 3000 MB/Sec will still be limited to around 500 by the port or associated cables.
This does exactly what it says it will do, which is rare. I use it in an HP Z840. I was having power issues with my regular USB3 ports at the back and tried this to take some of the load off. I was concerned that I'd need an extra power source for this card or that it wouldn't work in my very bottom PCIe slot (which is only 2x1, but my only available slot). Worked immediately without any issues.
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