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 5 USB (Universal Serial Bus) 2.0 ports to any desktop computer with a PCI slot. This PCI-based High Speed USB (Universal Serial Bus) 2.0 Adapter Card adds five USB (Universal Serial Bus) 2.0 A Female ports (1 internal, 4 external) to your PCI-capable PC. Supported by popular operating systems including Windows 98SE/ME/2000/XP/ Vista, the PCI USB (Universal Serial Bus) 2.0 card is a versatile solution that lets you add USB (Universal Serial Bus) 2.0 connections without having to upgrade the system motherboard. A convenient & time-saving solution, the PCI USB (Universal Serial Bus) card is WHQL certified to simplify driver installation in Windows XP operating environments, & supports USB (Universal Serial Bus) device hot-swapping
- allowing you to connect/disconnect USB (Universal Serial Bus) peripherals without having to power down the computer.
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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 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. ...

Add four USB (Universal Serial Bus) 3.0 ports
- three external ports & one internal port
- to your computer. Here's a cost-effective

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Add 4 Independent Super Speed USB (Universal Serial Bus) 3.0 ports to your PC through a PCI Express slot. The PEXUSB3S400 PCI Express USB (Universal Serial Bus) 3.0 Card adds 4 independent external USB (Universal Serial Bus) 3.0 ports to any PCI Express x 4-enabled computer system, with full bandwidth support (up to 5 Gbps) per port when connected to USB (Universal Serial Bus) 3.0 devices. Unlike other USB (Universal Serial Bus) 3.0 cards, which share the maximum bandwidth between multiple ports, the card offers maximum transfer rates to each device when multiple devices are connected. Further enhanced with UASP support (USB Attached SCSI Protocol), this USB (Universal Serial Bus) 3.0 controller performs up to 70% faster than conventional USB (Universal Serial Bus) 3.0 when paired with a UASP supported enclosure (Note: UASP requires a compatible operating system). Using a more efficient protocol than the traditional USB (Universal Serial Bus) BOT (Bulk-Only Transport), UASP technology optimizes transfers by allowing multiple commands to be processed simultaneously, significantly increasing transfer speeds for less wait time on data transfers. This 4-port USB (Universal Serial Bus) 3.0 card features a stacked port layout, which places the ports one on top of the other, so more ports are able to fit into a smaller space. Plus, with a built-in SATA power connector, each USB (Universal Serial Bus) port can provide up to 900m A of power to devices that draw power from a host bus connection (500m A for USB (Universal Serial Bus) 2.0) by connecting to your computer power supply. UASP is supported in Windows 8, Server 2012 & Linux kernel 2.6.3 or later. In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB (Universal Serial Bus) 3.0 at peak performance. At the same peak in testing, UASP also showed up to an 80% reduction in required processor resources. Test results were obtained using an Intel Ivy Bridge system, Star Tech.com add-on USB (Universal Serial Bus) 3.0 cards, a UASP-enabled Star Tech.com enclosure, & a SATA III solid state drive. ...