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4Pcs MAX3232 DB9 Male RS232 Serial Prot to TTL Converter with DuPont Cable

SinLoon PCIe 5.0 X16 Expansion Card, Splits X16 Slot into X8+X4+X4

TTL RS485 Serial Communication Module DIN-Rail Mount Bidirectional Interconversion with Power Isolation and Digital Isolation SP3485 Chip

Thermaltake PCIe 4.0 Dual 90°Degree Connectors Riser Cable; 16Gbps High-Speed Transmission; 400mm; EMI Shielding; AC-077-CO1OTN-C1; 3 Year Warranty

NOYITO RS232 to TTL Serial Port Module Bidirectional Transceiver Compatible with 3.3V 5V Hardware Automatic Flow Control with Over-Voltage Protection

1X 19Pin USB 3.0 Header and 2X USB-A Ports PCIE USB 3.0 5Gbps Expansion Card for Windows and Linux Desktop PCs, Built in Self-Powered Technology, No Need Additional Power Supply (FS-HA-Pro)

StarTech 4-Port PCI Express RS232 Serial Adapter Card, TAA (PEX4S953)

ANMBEST 5PCS YX5200 DFPlayer Mini MP3 Player Module for Arduino