lspci -nnk | grep -E -iA3 "network|ethernet"

• lspci: Lists all PCI (Peripherial Component Interconnect) buses and devices attached to your motherboard (such as GPUs, audio cards, and network adapters).
• -nn: Along with the textual description/s, print the numeric [Vendor ID:Device ID] codes (e.g., [13c5:5178] ).
• -k: Shows which Kernel driver is handling the device, and which kernel modules are available for it.
• | grep -iA3 "network|ethernet": Pipes the massive list to grep, (-E) to use regExp so we can do both searches at once, case-insensitively (-i) for the words "network" and "ethernet" , and prints the matching line/s along with 3 lines of context after it/them (-A3) to ensure you can see the driver details.

02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 73)
        Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [Wilkens Peak 2] [8086:4470]
        Kernel Driver in use: iwlwifi
        Kernel modules: iwlwifi

0b:00.0 Network controller [0200]: Broadcom Inc. and subsidiaries NetXtreme BCM5761e Gigabit Ethernet PCI [14E4:1680] (rev 10)
        Subsystem: Dell Device [1028:0428]
        Kernel Driver in use: tg3
        Kernel modules: tg3

• Hardware Info: The vendor name, model name, and revision number/info if it's available.
• Hardware Ids [8086:08b1],[14E4:1680]: The first 4 numbers in each indicate the vendor (8086 is Intel, 14E4 is Broadcom) and the next 4 represent the hardware chipset/model. If the hardware info isn't available, an internet search with these numbers will get it.
• Kernel driver in use: This displays the active driver (like iwlwifi or tg3). If this line is missing from one of your devices, your Linux system has not loaded a driver for that device.

• To check just Ethernet (wired) cards:
  lspci -nnk |grep -iA3 "ethernet"
• To check just Wi-Fi (wireless) cards:
  lspci -nnk |grep -iA3 "network"
• If you get blank output:
  Your hardware might be connected via USB instead of PCI.
  lsusb