aitorss
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Pues eso que cambio una tarjeta PCI express con la que consigues añadir 4 usb 3.0 al ordenador(tiene chip TEXAS INSTRUMENTS TUSB7340) . Es de la marca Shentek (Taiwán) y es nueva. La compré para mi ordenador con Windows 8 pero los drivers no funcionan todavía para el 8. La he probado en Windows 7 y funciona perfecto. Si alguien la quiere para Windows 7 acepto propuestas de cambio.Features
Single-lane ( x1) PCI Express throughput rates up to 5Gb/s.
Compliant with Universal Serial Bus 3.0 specification Revision 1.0.
Compliant with xHCI (eXtensible Host Controller Interface) specifications Revision 0.96.
Supports simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices
Supports USB data transfer rate of 1.5/12/480/5000 Mbps.
Expands four external USB3.0 Super-Speed ports on the system.
Each USB port supplies maximum +5V / 900mA power output to USB device.
Hot-swapping feature allows you to connect/disconnect devices without powering down the system. √Certified by CE, FCC, RoHS, and Microsoft WQHL approval.
Specification
Interface:Single-Lane (x1) PCI Express Gen2 Model
USB3.0 Controller:TEXAS INSTRUMENTS TUSB7340
Port: 4 external USB3.0 ports
Speedata Transfer rate of 1.5/12/480/5000 Mbps.
Low Speed (1.5Mbps), Full Speed(12Mbps), High Speed(480Mbps), Super Speed(5Gpbs)
Power InputVD 4Pin Power Connector
Power output:+5V/900mA (each port)
Plug and Play – Yes
Hot Swap – Yes
OS supports – Win XP, Vista, Win 7
Package content
52009(4 port USB3.0 PCIe Card) x 1
Driver CD x 1
User Manual x 1
System Requirements
PC with 512MB of RAM and 1.0GHz or faster processor
One (1) available PCI Express 1.x/4.x/16.x slot
Windows® XP/Server 2003/Vista/Server 2008/Windows7 or later2
Linux support available from open Source Community
Single-lane ( x1) PCI Express throughput rates up to 5Gb/s.
Compliant with Universal Serial Bus 3.0 specification Revision 1.0.
Compliant with xHCI (eXtensible Host Controller Interface) specifications Revision 0.96.
Supports simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices
Supports USB data transfer rate of 1.5/12/480/5000 Mbps.
Expands four external USB3.0 Super-Speed ports on the system.
Each USB port supplies maximum +5V / 900mA power output to USB device.
Hot-swapping feature allows you to connect/disconnect devices without powering down the system. √Certified by CE, FCC, RoHS, and Microsoft WQHL approval.
Specification
Interface:Single-Lane (x1) PCI Express Gen2 Model
USB3.0 Controller:TEXAS INSTRUMENTS TUSB7340
Port: 4 external USB3.0 ports
Speedata Transfer rate of 1.5/12/480/5000 Mbps.
Low Speed (1.5Mbps), Full Speed(12Mbps), High Speed(480Mbps), Super Speed(5Gpbs)
Power InputVD 4Pin Power Connector
Power output:+5V/900mA (each port)
Plug and Play – Yes
Hot Swap – Yes
OS supports – Win XP, Vista, Win 7
Package content
52009(4 port USB3.0 PCIe Card) x 1
Driver CD x 1
User Manual x 1
System Requirements
PC with 512MB of RAM and 1.0GHz or faster processor
One (1) available PCI Express 1.x/4.x/16.x slot
Windows® XP/Server 2003/Vista/Server 2008/Windows7 or later2
Linux support available from open Source Community