Add 4 RS232 serial ports to your PC, through a single PCI expansion slot. The PCI4S550 4-Port PCI RS232 Serial Adapter Card (16550 UART) adds four RS232 serial ports, using a single PCI slot
- a cost-effective solution for connecting any new or legacy serial device, with data transfer rates of up to 115.2 Kbps. A versatile serial solution, the PCI serial card lets you add 4 ports using only a single standard profile PCI slot on the system. The included breakout cable separates the ports to avoid cluttered connections. Perfect for connecting serial modems, POS devices, PDAs, digital cameras, printers, ISDN terminal adapters & more to your system, the adapter card supports IRQ sharing & operates flawlessly in Windows & Linux environments.
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Add 4 RS232 serial ports to your PC, through a single PCI expansion slot. The PCI4S550 4-Port PCI RS232 Serial Adapter Card (16550 UART) adds four RS232 serial ports, using a single PCI slot
- a cost-effective solution for connecting any new or legacy serial device, with data transfer rates of up to 115.2 Kbps. A versatile serial solution, the PCI serial card lets you add 4 ports using only a single standard profile PCI slot on the system. The included breakout cable separates the ports to avoid cluttered connections. Perfect for connecting serial modems, POS devices, PDAs, digital cameras, printers, ISDN terminal adapters & more to your system, the adapter card supports IRQ sharing & operates flawlessly in Windows & Linux environments.
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Add 4 high-speed RS-232 serial ports to your computer with a buffered serial card from Star Tech.com. The card uses a 16-Byte buffer in both the receive & transmit channels simultaneously, reducing the number of CPU interrupts & improving system performance. Compatible with both 3.3 & 5 volt motherboards, & uses DB9 connectors for use with a wide range of serial peripherals. Suitable for industrial applications, this card is compatible with a wide range of operating systems, including Windows, DOS, Linux, & Unix. ...

Add 4 Super Speed USB (Universal Serial Bus) 3.0 ports to a computer through a PCI slot. The PCIUSB3S4 4-Port PCI to USB (Universal Serial Bus) 3.0 Card enables legacy PCI slots to support the Super Speed USB (Universal Serial Bus) 3.0 standard, which is capable of data transfer rates up to 5 Gbps. Using USB (Universal Serial Bus) 3.0 devices with this card will increase data transfer rates with up to 1.3 Gbps of available bandwidth (PCI bus limit)
- more than doubling performance compared to a USB (Universal Serial Bus) 2.0 connection. This versatile USB (Universal Serial Bus) 3.0 adapter

Includes:: an optional SATA power connector which allows each USB (Universal Serial Bus) port to deliver up to 900m A of power to connected USB (Universal Serial Bus) 3.0 devices
- suitable for even the most power hungry devices. A perfect solution for older PCI-based systems or computers with only PCI expansion slots remaining, the card allows those systems to stay relevant & up-to-date with the latest USB (Universal Serial Bus) technology. The card is also backward compatible with USB (Universal Serial Bus) 2.0 & 1.x devices, so it will not only work with any future USB (Universal Serial Bus) 3.0 devices, but will also support older devices.



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Add 4 Super Speed USB (Universal Serial Bus) 3.0 ports to a computer through a PCI slot. The PCIUSB3S4 4-Port PCI to USB (Universal Serial Bus) 3.0 Card enables legacy PCI slots to support the Super Speed USB (Universal Serial Bus) 3.0 standard, which is capable of data transfer rates up to 5 Gbps. Using USB (Universal Serial Bus) 3.0 devices with this card will increase data transfer rates with up to 1.3 Gbps of available bandwidth (PCI bus limit)
- more than doubling performance compared to a USB (Universal Serial Bus) 2.0 connection. This versatile USB (Universal Serial Bus) 3.0 adapter

Includes:: an optional SATA power connector which allows each USB (Universal Serial Bus) port to deliver up to 900m A of power to connected USB (Universal Serial Bus) 3.0 devices
- suitable for even the most power hungry devices. A perfect solution for older PCI-based systems or computers with only PCI expansion slots remaining, the card allows those systems to stay relevant & up-to-date with the latest USB (Universal Serial Bus) technology. The card is also backward compatible with USB (Universal Serial Bus) 2.0 & 1.x devices, so it will not only work with any future USB (Universal Serial Bus) 3.0 devices, but will also support older devices.



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Add 4 Super Speed USB (Universal Serial Bus) 3.0 ports to a computer through a PCI slot. The PCIUSB3S4 4-Port PCI to USB (Universal Serial Bus) 3.0 Card enables legacy PCI slots to support the Super Speed USB (Universal Serial Bus) 3.0 standard, which is capable of data transfer rates up to 5 Gbps. Using USB (Universal Serial Bus) 3.0 devices with this card will increase data transfer rates with up to 1.3 Gbps of available bandwidth (PCI bus limit)
- more than doubling performance compared to a USB (Universal Serial Bus) 2.0 connection. This versatile USB (Universal Serial Bus) 3.0 adapter

Includes:: an optional SATA power connector which allows each USB (Universal Serial Bus) port to deliver up to 900m A of power to connected USB (Universal Serial Bus) 3.0 devices
- suitable for even the most power hungry devices. A perfect solution for older PCI-based systems or computers with only PCI expansion slots remaining, the card allows those systems to stay relevant & up-to-date with the latest USB (Universal Serial Bus) technology. The card is also backward compatible with USB (Universal Serial Bus) 2.0 & 1.x devices, so it will not only work with any future USB (Universal Serial Bus) 3.0 devices, but will also support older devices.



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The PEXUSB4DP is a low profile 4 port USB (Universal Serial Bus) card designed for versatility & performance. Providing simple system expansion for added peripheral connections, this PCI Express USB (Universal Serial Bus) card adds 3 external USB (Universal Serial Bus) 2.0 slots & 1 internal USB (Universal Serial Bus) 2.0 slot, with support for high speed USB (Universal Serial Bus) 2.0 data transfer rates of up to 480 Mbps, &

Includes:: WHQL certified drivers & easy plug & play installation. Capable of adapting to virtually any PC case form factor, the low profile USB (Universal Serial Bus) card

Includes:: a standard profile bracket for installation in full form factor cases.



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Add four ESD-Protected RS232 ports, with 5V or 12V selectable power output through a PCI Express slot. The PEX4S553S 4-Port PCI Express Serial Card lets you add four ESD-Protected RS232 ports, with 5V or 12V selectable power output through a PCI Express slot. Ideal for industrial environments, this 4-port serial card offers built-in 15KV ESD-protection which helps prevent damage to connected devices in the event of line surges & electro-static discharge. Plus, for devices that require additional power, the multi-port serial card also has a jumper-selectable 5V or 12V power output option (pin 9) using either the PCIe bus, or through an SP4 connection to your power supply. For added flexibility, the power output can be enabled or disabled on a per-port basis so you choose which ports supply power. This versatile RS232 card supports high-speed serial data rates up to 921.6 Kbps, & is compatible with a broad range of operating systems. To maximize installation options, the 4-port card is equipped with a standard profile bracket &

Includes:: an optional low profile bracket for installation in small form factor computers. To avoid crowded connections that can occur with fixed/static ports, the card uses a break-out cable which turns a single connector on the card into four flexible RS232 serial ports.

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Add two RS232, & two RS422/485 serial ports to your PC through a PCI-Express expansion slot. The PEX4S232485 4 Port PCI Express PCIe Serial Combo Card
- 2 x RS232 2 x RS422 / RS485 lets you add two RS232, & two RS422/485 serial ports to your PC through a PCI-Express expansion slot. This PCI express serial card is a single card solution that is compatible with nearly any serial communication protocol, supporting RS-232, RS-422, RS-485 2-wire or RS-485 4-wire operating modes. A flexible solution for adding serial ports to full-sized, or small form factor systems, the 4-port serial card

Includes:: both low & full profile brackets while the included breakout cable helps to avoid cluttered connections.


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Add front or rear panel USB (Universal Serial Bus) 3.0 ports to your computer case using USB (Universal Serial Bus) 3.0 motherboard-style headers. This PCI Express USB (Universal Serial Bus) 3.0 card offers a cost-effective upgrade that lets you add four USB (Universal Serial Bus) 3.0 ports to your computer through a PCIe slot. It offers two external ports plus two internal USB (Universal Serial Bus) 3.0 headers to help adapt your desktop or server to support a variety of USB (Universal Serial Bus) 3.0 devices. With extra motherboard-style USB (Universal Serial Bus) 3.0 headers you have the flexibility to add more internal USB (Universal Serial Bus) 3.0 devices to your PC. When your existing headers are occupied, you can connect front panel hubs or card readers using this versatile alternative to costly motherboard & computer upgrades. For added convenience, the card integrates two external USB (Universal Serial Bus) 3.0 ports, so you can plug in more devices such as external hard drives or printers. The USB (Universal Serial Bus) 3.0 card is easy to install & requires no additional drivers or software in natively supported Windows 8.1 / 8 operating systems. Plus, it features a dual profile design that fits in standard or low-profile cases, so you can rest assured it will fit in your small form-factor system if needed. Connecting older peripherals isn't a problem either. So, there's no need to purchase new devices since the adapter card is backward compatible with your USB (Universal Serial Bus) 2.0 & 1.x technology. This high-performance Super Speed USB (Universal Serial Bus) 3.0 card supports data transfer rates up to 5 Gbps & is enhanced with UASP support, which can perform ~70% faster read speed & 40% faster write speed over traditional USB (Universal Serial Bus) 3.0, when paired with a UASP-enabled enclosure. ...