Top 20 Best Selling Serial Port Cards I/O Port Cards (2019)




Converts a USB port into a Null Modem DB9 serial port View larger Add A Null Modem RS232 Serial Port To Your Laptop Or Desktop Computer Through USB The ICUSB232FTN FTDI USB to Null Modem Serial Adapter Cable (1-Port) converts an available USB 1.1 or 2. ... more info

The PCI2S550 2 Port 16550 Serial Card can be installed in an available PCI slot to add two RS232 serial ports to your system. A cost-effective solution for connecting any new or legacy serial device, with data transfer rates of up to 115.2 Kbps. Perfect f ... more info


This low profile/half-height PCI Express Serial card adds an RS232 (DB9) Serial Port to a computer through an available PCI Express slot, while relying on a native, single-chip design (Oxford OXPCIe952) that harnesses the capability of true PCI Express - ... more info





The ICUSB2321F 1-Port USB to Serial RS232 Adapter Cable with FTDI chipset and COM Retention converts an available USB 1.1 or 2.0 port into an RS232 serial DB9 port to connect, monitor and control your serial devices. This compact adapter features COM rete ... more info

The PEXESAT32 2 Port PCI Express 6Gbps eSATA Controller Card offers simple connectivity between a host computer and eSATA 3.0 devices - a cost-effective solution for connecting high-speed storage, such as High RPM Hard Drives and Solid State Drives (SSD), ... more info



Easily add up to 2 Serial ports to any modern computer with this easy to use PCI-e serial controller card. ... more info

PCI-Express RS232 1x Serial Port with MSC9901 Chipset. Fully compliant with PCI-Express Base Specification Revision 1.0a. Single-Lane (x1) PCI-Express with throughput up to 2.5Gbps. Low profile ready with extra low profile bracket. Compatible with industr ... more info



The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express ... more info


One card supports three different variations on parallel ports, with a data transfer rate up to 1.5 MB/Sec. It's a dual 1284 parallel port connector with PCI bus interface, easy plug and play operation, and it uses an all-in-one solution from NeMos for su ... more info


Specifications: Dimensions: 42mm x 31mm x 12mm Voltage: 5V This is a brand new MAX232 RS232 to TTL 5V converter board. Connector: RXD TXD RTS CTS Package included: 1 x New MAX232 RS232 To TTL Converter/Adapter Module Board ... more info

Rosewill makes adding a parallel port an easy, affordable experience. Their universal PCI card supports SPP/EPP/ECP modes for maximum compatibility. ... more info




Easily add 2 Serial ports and 1 Parallel Port to a full tower computer case or 1 Serial and 1 Parallel ports to a slim server chassis. ... more info

The EC1S952 1 Port Native ExpressCard RS232 Serial Adapter Card with 16950 UART lets you add an RS232 serial port to your laptop or ExpressCard-equipped desktop computer. The serial ExpressCard is designed based on a single-chip architecture (as opposed t ... more info


Add 5 USB ports in seconds with Rosewill's 4+1 PCI adapter. This handy card has 1 internal and 4 external ports. Use the external ports for printers, scanners, cameras media players and phones. The internal port can be used to give your system front panel ... more info


The Rosewill RC-301 dual port serial card is a cost effective solution for people who need multiple ports. Rosewill's RC-301 dual serial port card supports high transfer rates. The DB9 connector makes it compatible with most devices on the market. ... more info



The PCI1S550 16550 Serial PCI Card can be installed in a PCI slot to add one RS232 serial port - a cost-effective solution for connecting any new serial device or old legacy serial device, with data transfer rates of up to 115.2 Kbps. Perfect for connecti ... more info

Add 2 RS-232 serial ports to your full height or low profile computer through a PCI Express slot - The PEX2S952 PCI Express based serial card turns a PCI Express slot into 2 RS-232 (DB9) serial connections. The adapter card is based on a native single chi ... more info



The ICUSB2322F 2-Port USB to Serial RS232 Adapter Cable with FTDI chipset and COM Retention converts an available USB 1.1 or 2.0 port into 2 RS232 serial DB9 ports to connect, monitor and control your serial devices. This compact adapter features COM rete ... more info

The PEX1S1P952 1S1P Native PCI Express Parallel/Serial Combo Card with 16950 UART turns a PCI Express slot into 1 RS232 (DB9) serial, and 1 parallel port. The combo card features a native PCI Express single chip design that allows you to take advantage o ... more info

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