Compatibility

Mac Compatibility

• Mac Pro 14,8 (2023)
• Mac Pro 7,1 (2019)
• macOS 15, 26; not compatible with macOS 27

Windows Compatibility

• Windows computer with an available x4 or larger PCIe slot
• Windows 11 25H2+
• Windows Server 2025

Linux Compatiblity

• Linux computer with an available x4 or larger PCIe slot
• Supported Linux kernel, 6.6 or later

Thunderbolt Expansion System Compatibility

• Thunderbolt expansion system with an available x4 or larger PCIe slot

Hardware

Part Number

• USB3C-1M20G-E

Warranty

• 2-year

Form Factor

• Low-profile x4 PCIe card

Bus Interface

• PCI Express 3.1 x4

External Connector

• One USB-C port

Peripherals Supported

• Industry standard USB 3 and 2
• Thunderbolt-only peripherals are NOT supported

Bus-powered Peripherals Supported

• 3.0A advertised using USB CC (Channel Configuration)
• Up to 15W for operation or charging

Cable Recommended

• USB-C (20 Gbps)

USB Chipset

• ASMedia 3242

USB Standard

• Complies with OHCI (Open Host Controller Interface), EHCI (Enhanced Host Controller Interface), and xHCI (eXtensible Host Controller Interface) standards

UASP

• USB attached SCSI protocol supported

Hot Plug

• Supports hot-pluggable and hot swappable device connection

Operating Temperatures

• 0ºC to 35ºC (32ºF to 95ºF)

Package Contents

• Allegro Max USB-C 20 Gbps 1-Port PCIe Card
• Two PCIe mounting brackets (full-height and low-profile)