Add two RS422/485 serial ports through a standard or low profile PCI expansion slot - pci serial card - rs422 serial card - rs485 serial card - dual port serial card - 2 port rs422 pci card

Add 2 native FireWire 800 ports to your low profile/small form factor computer through a PCI Express expansion slot - pci express 1394a - pcie firewire card - pcie 1394 -4 port firewire 400 card

Add 7 USB 2.0 Ports to your PC through a PCI slot - pci to usb - pci usb controller - usb 2.0 card - pci to usb adapter - pci usb card

Add 4 USB 2.0 ports to your low profile/small form factor computer through a PCI Express expansion slot - pci express usb 2.0 card - pci-e usb 2.0 card - pcie usb 2.0 card

Add 4 FireWire ports to a desktop computer through a PCI slot - pci firewire card - 1394 pci firewire card - pci firewire 400 -4 port firewire card

Add four USB 3.0 ports with four independent channels, LP/SATA power, and charging support to your PC through a PCI Express slot - 4 Port PCIe SuperSpeed USB 3.0 Card w/ 4 Dedicated 5Gbps Channels - UASP - SATA/LP4 - Quad Port USB 3.0 PCIe Controller

Add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot - pcie rs485 - pci express rs485 - pcie rs485 - pci express rs422 - pcie rs422

Add 2 SuperSpeed USB 3.0 ports to your PCI Express-enabled PC-2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP-LP4 Power-Dual Port USB 3.0 PCIe Controller-Dual Profile PCI Express 5Gbps USB 3 Adapter

Add Bluetooth 4.0 capabilities to a laptop or desktop computer through USB-Mini USB Bluetooth 4.0 Adapter-50m (165ft)-Mini Bluetooth Dongle-Bluetooth Smart Ready-LE+EDR-Class 1 EDR Bluetooth Wireless Adapter-Bluetooth 4.0 Low Energy

Add Gigabit Ethernet connectivity and 3 USB 3.0 Hub ports to a computer through a single SuperSpeed USB 3.0 port - USB 3.0 Network Adapter - USB 3.0 to Gigabit Ethernet - USB 3 NIC - USB 3 Ethernet Adapter - USB Hub with Ethernet port

Add Gigabit Ethernet network connectivity to a Laptop or Desktop through a USB 3.0 port - USB 3.0 to Gigabit Ethernet - USB 3.0 Gigabit Adapter - USB 3.0 to Ethernet - USB 3.0 Ethernet Adapter - 10/100/1000 Mbps USB 3.0 Network Adapter

Add two RS232 serial ports to any system with an available USB motherboard header - USB to Serial - USB to RS232 - USB to DB9 - USB to serial Adapter - USB to serial port