Amazon.com: IO Crest SI-MPE15046 2 Port Serial DB9 Mini PCIe Controller Card (RS-232) : Electronics
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NeweggBusiness - SYBA 2 Port Serial Mini PCI-e Controller Card (RS-232, DB9, RS-422, RS-485) Model SI-MPE15046
IOCREST PCI Express 2 Ports Serial RS232 Com db9 Controller Card PCI e 1.0 x 1 WCH382 Chip with Low Profile Bracket|pci express|pci express comport pci express - AliExpress
8 Port PCIE To DB9 RS232 Serial Port Riser Card Serial Controller Card PCI E Express Extension Converter Adapter Chip XR 17V358|Add On Cards| - AliExpress
Controller Card - PCIe 2x M.2 SATA SSD - SATA Controller Cards | StarTech.com
Syba M-Key M.2 to PCIe x4 SSD Adapter or M Key M2 to SATA Connector Converter SY-PEX50073, Green : Everything Else - Amazon.com
4 Port Serial Card Pci-express To Rs232 Com Port Db9 Pin 1/9 Feet 5v Or 12v Power Supply Pcie Host Controller Multi-serial Cards - Add On Cards & Controller Panels - AliExpress
StarTech.com PEXM2SAT3422 M.2 SATA (NGFF) SATA 1 - PCI Express x4 Male 2x M.2 NGFF SSD RAID Controller Card plus 2x SATA III Ports - PCIe - Newegg.com