Amazon.com: 2 Port PCI RS232 Serial Adapter Card with 16C750 UART - PCIe X1 to (2) RS-232 Serial Card : Electronics
Amazon.com: StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Dual Serial DB9 Card - 16950 UART - Expansion Card - Windows & Linux (PEX2S953) : Electronics
PCIe Combo Serial Parallel Expansion Card PCI Express to Printer LPT Port RS232 Com Port Adapter IEEE 1284 Controller Card WCH382 Chip for Desktop PC Windows 10 with Low Bracket
Amazon.com: DTECH 2 Port PCI Serial Card PCI to COM Port DB9 RS232 Expansion Adapter for Desktop Computer PC Windows 10 8 7 XP Vista with 16C550 UART : Electronics
StarTech.com 4-Port PCI Serial Card with 16550 UART - PCI RS232 Serial Adapter Card (PCI4S550N)
Amazon.com: StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Dual Serial DB9 Card - 16950 UART - Expansion Card - Windows & Linux (PEX2S953) : Electronics
Amazon.com: IO Crest 2 Port Serial PCI-e 1.0 x 1 with Full and Low Profile Brackets SI-PEX15037 : Electronics
Amazon.com: StarTech.com 2-Port PCI Express Serial Card with 16C1050 UART - RS232 Low Profile Serial Card - PCI Serial Card (PEX2S1050) : Electronics
StarTech.com PCI Express Serial Card - 16 DB9 RS232 Ports - Low + Full Profile - Multiport Serial Adapter - PCIe Serial Card (PEX16S550LP)
Amazon.com: PCIE 2 Port Serial Expansion Card PCI Express to Industrial DB9 Serial / RS232 COM Port Adapter 16C550 UART WCH382 Chip for Desktop PC Windows 10 with Low Bracket : Electronics
Amazon.com: DTECH 2 Port PCI-E Serial Card RS232 PCI Express Adapter COM Port Expansion for Desktop Computer PC Windows 10 8 7 XP Vista Linux Mac with 16C550 UART : Electronics
Amazon.com: MZHOU PCI-Express PCIe Expansion Card - 1X Serial COM interfaces - COM Port RS232 Interface - Adapter Converter Card, RS-232 Module with 4 Connections, 18-pin : Electronics
Amazon.com: StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16950 UART - Low Profile Expansion Card - Windows & Linux (PEX4S953LP) : Electronics
Amazon.com: StarTech.com 2 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART - PCIe RS232 - PCI-E Serial Card (PEX2S553LP) : Electronics
Amazon.com: StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART - Low Profile Serial Card (PEX4S553), Green : Electronics
Amazon.com: 1 Port PCI RS232 Serial Adapter Card with 16C750 UART - PCIe X1 to RS-232 Serial Card : Electronics
Amazon.com: GODSHARK PCIe Serial Expansion Card, 2 Port PCI Express 1.0 x 1 to Industrial DB9 COM RS232 Converter Adapter Controller for Desktop PC (Will Also Work on PCI-E x4, x8, x16
Amazon.com: StarTech.com 2 Port PCI Express RS232 Serial Adapter Card with 16950 UART - PCIe Serial Card - PCI Express RS232 Card - PCIe RS232 (PEX2S950) : Electronics