The adapter is advertised to be 10/100/1000 Mbps, but only works at 100 Mbps with r8169 driver! (as of December 2023)
lspci
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 05)
lspci -v
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller (rev 05)
Subsystem: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller
Flags: bus master, fast devsel, latency 0, IRQ 19, IOMMU group 10
I/O ports at 3000 [size=256]
Memory at b4200000 (64-bit, non-prefetchable) [size=4K]
Memory at b2100000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 1c-01-00-00-36-4c-e0-00
Kernel driver in use: r8169
Kernel modules: r8169
lspci -nnk
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:8136] (rev 05)
Subsystem: Realtek Semiconductor Co., Ltd. RTL810xE PCI Express Fast Ethernet controller [10ec:0123]
Kernel driver in use: r8169
Kernel modules: r8169