Hello, As far as I know, you can use a USB 3.0 debug cable as an alternative. Also, I think there other methods to connect between host and target in Intel(r) UEFI Development Kit (Intel(r) UDK) Debugger Tool (version 1.5) Configuration and Setup Guide. (https://software.intel.com/content/www/us/en/develop/download/intel-uefi-development-kit-intel-udk-debugger-tool-version-15-configuration-and-setup-guide.html) However, I have not tried them from my side. Best Regards, Hao Wu From: devel@edk2.groups.io On Behalf Of Tiger Liu(BJ-RD) Sent: Wednesday, July 7, 2021 6:32 PM To: devel@edk2.groups.io Subject: [edk2-devel] Ajays NET20DC Cable's alternative Hi, All: If users want to debug UDK BIOS source code, they could use COM port or USB port as communication channel. Usually, UDK suggests using Ajays NET20DC device as the usb port inter-connection cables between Host and Target board. But, I found: Ajays is bankcrupt so their product line is end of life (EOL). So, is there any other suggestions? Is there other alternative usb debug cable? Thanks 保密声明: 本邮件含有保密或专有信息,仅供指定收件人使用。严禁对本邮件或其内容做任何未经授权的查阅、使用、复制或转发。 CONFIDENTIAL NOTE: This email contains confidential or legally privileged information and is for the sole use of its intended recipient. Any unauthorized review, use, copying or forwarding of this email or the content of this email is strictly prohibited.