Pre-installed in some regions with a custom Ubuntu image that takes advantage of the system's hardware features and may include additional software. Standard images of Ubuntu may not work well, or at all.
This system was tested with 20.04 LTS, running the 5.15.0-1031-intel-iotg kernel.
American Megatrends International, LLC.: 5.19 (UEFI)
Network throughput is limited by the CPU C States setting. In order to maximize the throughput, C States need to be disabled in the BIOS:
1. Enter BIOS
2. Advanced -> Power & Performance -> CPU - Power Mgt Control -> C states
Another option is to install a separate network driver from Realtek: https://www.realtek.com/zh-tw/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci-express-software
Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller pci (10ec:8168 10ec:0123)
Intel Corp. Intel(R) Celeron(R) N6211 @ 1.20GHz
Intel Corp. Elkhart Lake [UHD Graphics Gen11 16EU] pci (8086:4555)
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