$44 5G M.2 to Ethernet and USB converter takes M.2 5G PCIe

Waveshare "5G M.2 to Gigabit Ethernet converter, 5G M.2 to USB3 converter" is a single device designed to easily and cheaply add 5G connectivity to a LAN

M.2(M.2) 3G/4G/5G Module to Type C /USB 3.0 Adapter with NANO SIM card Slot

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Ugreen expansion card adapter PCIe 4.0 x16 to M.2 NVMe M-Key black (CM465) - B2B wholesaler.hurtel.com

Intel Ethernet Network Adapter X710-T2L - network adapter - PCIe 3.0 x8 - 100M/1G/2.5G/5G/10 Gigabit Ethernet x 2

USB3.0 to NGFF M.2 Key B 4G 5G Modem Adapter Enclosure with SIM Card Slot – New Style - The Wireless Haven

CNX Software Limited on LinkedIn: FriendlyELEC CM3588 NAS Kit comes with four M.2 Key-M 2280 PCIe Gen 3 x1…

10GBase-T NBASE-T Ethernet Network Card - Network Adapter Cards, Networking IO Products

5G M.2 to Gigabit Ethernet Converter, 5G M.2 to USB3.1, Aluminum Alloy Case, Wall-Mount Support, Quad Antennas, Onboard M.2 Key B Interface, USB3.1 Port, Options For 5G Module

Shop StarTech.com 2-Port 10Gb PCIe NIC with Native Link Aggregation - 10Gbase-t Ethernet Card - 100/1000/10000 Mbps LAN Card (ST20000SPEXI) - Network adapter - PCIe 2.0 x8 low profile - 10Gb