2 Port USB-A/HDMI / USB-C KVM KVM Switch

1 ft USB to RS232 Serial DB9 Adapter Cable with COM Retention – USB to DB9 – USB to Serial Port Adapter

4-Port PCI Express RS232 Serial Adapter Card – 16950 UART – 256-byte FIFO Cache – ASIX AX99100 – Full Profile Bracket – Replacement for PEX4S952 (PEX4S953)

2 Port Low Profile Native RS232 PCI Express Serial Card with 16550 UART – PCIe RS232 – PCI-E Serial Card