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"usb serial adapter"
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USR-TCP232-306 Serial to Ethernet Converter LAN Ethernet TCP/IP to RS232 RS485 RS422 Converter2
Limited time offer, ends 11/15
$137.59
Free Shipping
PCIE USB 3.0 Card 7 Ports High Speed 5Gbps, RIITOP PCI-E Expree to USB3 Expansion Adapter Card Controller for Windows 11/10/8/7/XP/Vista (NOT for 2U Case)
Limited time offer, ends 12/10
$23.50
Free Shipping
PCIE USB 3.2 Gen 2 Card 5 Ports(3X USB C - 2X USB A), PCI Expree to USB Expansion Card Super Speed 10Gbps PCI-e USB3.2 Hub Controller Adapter for Windows 11/10/8/7/XP/Vista
Limited time offer, ends 12/10
$36.30
Free Shipping
