Banana Pi quad-GbE router SBC features M.2 and five mini-PCIe slots with SIM
Wifi Network Card High Gain Extended Antennas with Cable PCIE Adapter/Router/AP | eBay
TP-Link Archer TX55E AX3000 Wi-Fi 6 Bluetooth 5.2 PCIe Adapter
ASUS AX1800 PCIe WiFi Adapter (PCE-AX1800) - WiFi 6, Bluetooth 5.2, Ultra-Low Latency Wireless, 2 External Antenna, Supporting Total Data Rate up to 1800Mbps, WPA3 Network Security, OFDMA and MU-MIMO - Walmart.com
TP-Link WiFi 6 AX3000 PCIe WiFi Card (Archer TX3000E), Up to 2400Mbps, Bluetooth 5.0, 802.11AX Dual Band Wireless Adapter with MU-MIMO,OFDMA,Ultra-Low Latency, Supports Windows 10 (64bit) only Wireless Adapters - Newegg.com
PCI Express to Dual PCI Adapter Card PCIe X1 to Router Tow 2 PCI Slot Riser CaD4 | eBay
Source GL.inet quectel EC25 mini PCIe 4g modem 4G LTE wifi router on m.alibaba.com
Archer TXE75E | AXE5400 Wi-Fi 6E Bluetooth 5.3 PCIe Adapter | TP-Link
TP-Link Archer TX3000E AX3000 Wi-Fi 6 Bluetooth 5.0 PCIe Adapter | Dell USA
IEEE 802.11b/g/n High Power AP Router PCIe Card (with CPU) Module AWPCIENAP1 - AsiaRF
MikroTik CCR2004-1G-2XS-PCIe is a 2x SFP28 25GbE Router on a PCIe Card