Allegro Pro 4 USB 3.2 Gen 2 Type A PCIe Card (USB3-PRO-4P10-E)
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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
File Name: ASMxHCI_FWUpdateV1291_251230700240V1_for_Sonnettech_ASM3142_cards.zip
File Size: 3.38 MB
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 (11)
IDArticle TitlePost Date
756 Do the Sonnet USB 2.0 or USB 3 cards support the Apple SuperDrive?Apr-02-22
759 My bus-powered USB 3 drive or SSD will not reliably mount or transfer data.Dec-14-19
817 Storage connected to a USB 3 PCIe card (or Tango combo card) gives an macOS error message upon wake from sleep.May-12-20
933 What versions of macOS support Allegro USB 3 cards?Apr-02-22
956 What generations of Thunderbolt chassis do Sonnet Allegro PCIe cards support?Apr-02-22
971 One or more of my ports has stopped working on my USB 3 card.Aug-24-22
1080 What is the difference between USB 3.0, 3.1 and 3.2?Apr-02-22
1099 What makes Sonnet USB 3.2 Cards more reliable than other USB 3 cards?Apr-02-22
1144 Why does Sonnet use only PCIe 2 to connect the two controllers on these 4-port USB 3.2 Gen 2 cards?Apr-18-21
1149 How to configure Linux to use Allegro Pro USB card models USB3C-4PM-E and USB3-PRO-4P10-EMay-04-21
In some computers, USB 3 devices connected to Allegro Pro USB 3 card models USB3C-4PM-E and USB3-PRO-4P10-E are not detected by Linux.

You can fix this by adding the Linux kernel parameter pci=disable_acs_redir=pci:12D8:2308 to the computer's Linux boot script. (Describing how to add a Linux kernel parameter to the computer's Linux boot script is beyond the scope of this FAQ.)

This parameter sets disable_acs_redir for PCIe devices with id 12D8:2308 (which is the PCIe bridge chip on these cards). This parameter disables PCI Express Access Control Services (ACS) functions ACS P2P Request Redirect and ACS P2P Completion Redirect. This has no effect on operation unless you are in a virtualized environment, in which case you must assign all four USB 3 ports to a single virtual machine.
 
1168 If I put a usb 2.0 and 3.0 device on the same controller will the speeds for the 3.0 device drop to 2.0 like older split-port controllers?Dec-07-21