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"cable modems"
USB to RS232 Serial Adapter (FTDI Chipset), USB to RS232 Gold Plated DB9 Serial Converter Cable for Windows 11, 10, 8.1, 8, 7, Vista, XP, 2000, Linux and Mac OS X, macOS, 6.6 Feet/2M
Limited time offer, ends 11/04
$47.03
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PCI Express 1 Serial 1 Parallel Combo Card, PCIe to DB9 RS232 COM + DB25 LPT Printer Port Expansion Card with Low Profile Bracket, Industrial Controller Card for Desktop PC
Limited time offer, ends 11/04
$51.93
Free Shipping
PCI Express 4-Port Serial COM Expansion Card, PCIe to DB9 RS232 Serial Adapter Card with Low Profile Bracket, Industrial 9-pin Port COM Controller Card for Desktop PC
Limited time offer, ends 11/04
$57.81
Free Shipping