Fusion Dual 2.5" SSD RAID PCIe Card
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Driver (0)
Firmware (1)
IDDownload TitleDownload LinkPost Date
1290 ASM3142 USB Host Controller Firmware Update 1291_251230700240V1
Download Now
August 4, 2026
Operating System Requirements: Windows 11
Description: ASMxHCI_FWUpdateV1291_251230700240V1.exe is a Windows app that updates ASMedia ASM3142 firmware to revision 251230700240 in the following Sonnet Technologies products:

Allegro Pro USB-C 8-Port PCIe Card (USB3C-8PM-E)
Allegro Pro 4 USB 3.2 Gen 2 Type A PCIe Card (USB3-PRO-4P10-E)
Allegro Pro 4 USB 3.2 Gen 2 Type-C PCIe Card (USB3C-4PM-E)
Allegro USB 3.2 Gen 2 Type-C PCIe Card (USB3C-2PM-E)
McFiver PCIe Card (G10E-USBC-M2-E)
Fusion Dual 2.5-inch SSD RAID PCIe Card (FUS-SSD-2RAID-E)

Note: This release provides a fix for controller detection failure with certain motherboards with Intel® 800/700/600 Series desktop chipsets.
 
 
Manual (1)
FAQ (12)
IDArticle TitlePost Date
756 Do the Sonnet USB 2.0 or USB 3 cards support the Apple SuperDrive?Apr-02-22
933 What versions of macOS support Allegro USB 3 cards?Apr-02-22
All Sonnet Allegro (and Fusion Dual 2.5" SSD RAID) PCIe Cards use a macOS pre-installed driver.

These cards are compatible with macOS 10.10 in the MacPro 3,1; 4,1 & 5,1 and in Thunderbolt 2 Expansion chassis.

These cards are not compatible with macOS 10.11, due to a bug in the Apple driver.

These cards are compatible with macOS 10.12 (2)-10.14 in the MacPro 5,1 and in Thunderbolt 2 & 3 Expansion chassis.

These cards are compatible with macOS 10.15-macOS 12 in the 2019 Mac Pro and in Thunderbolt 2 & 3 Expansion chassis.
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Notes:

- These cards are not compatible with Thunderbolt 1 expansion chassis.

- macOS 10.12 erroneously reports a 5Gbps connection when connected at 10Gbps.

- The maximum Apple-supported OS for the Mac Pro 3,1 and 4,1 is OS X 10.11. Dosdude1 offers patchers to allow installation of newer versions of macOS. The Apple USB 3 driver in these patched newer versions will support the Allegro cards.

- Performance of the Allegro cards may be limited by the Mac Pro 5,1 PCIe 2.0 bandwidth.


 
956 What generations of Thunderbolt chassis do Sonnet Allegro PCIe cards support?Apr-02-22
976 In a Mac Pro, the SSDs are seen as external drives, how do I prevent accidental ejects?Feb-14-23
992 The write speed of my Samsung 830, 840, 840 EVO, 840 PRO, 850 EVO or 850 PRO has slowed to below 100MB/s.Mar-30-20
1096 Does the Fusion Dual 2.5" SSD support 15mm 2.5" SATA/SAS hard drives?Mar-30-20
1097 The Fusion Dual 2.5" SSD RAID PCIe card gives an macOS error message upon wake from sleep.Mar-30-20
1099 What makes Sonnet USB 3.2 Cards more reliable than other USB 3 cards?Apr-02-22
1108 If I want to make a RAID 0 configuration across two cards (four SSDs), how should I do it?Aug-10-20
For the significantly better performance, make a hardware RAID 0 on each card, and software RAID 0 across the two cards.
 
1109 How do I detect and replace a failed SSD in RAID 1 mirror mode?Aug-13-20
1136 How can I use my new SSD volume to hold my user folder on macOS?Feb-14-23
1183 The Write performance of my SSD is very slow under Windows.Feb-14-23