星际科技 PEXUSB3S42V 4 通道 PCIe USB 卡适配器与 UASP - 超速 USB 3.0，SATA/LP4 电源 星际科技
星际科技 PEXUSB3S42V 4 通道 PCIe USB 卡适配器与 UASP - 超速 USB 3.0，SATA/LP4 电源 星际科技
StarTech.com PEXUSB3S42V
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产品关键特征
- 在两个独立总线通道上提供四个外部的USB 3.2 Gen 1端口
- 支持高达10 Gbps的总传输带宽-每两个端口最高可达5 Gbps
- 在所有四个端口上支持UASP
- 符合PCI Express 2.0规格的PCIe x4接口
- 可选的LP4或SATA电源连接器，每个USB端口最多提供900mA的电流
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PEXUSB3S42V
当连接多个设备时，传统的单总线USB 3.2 Gen 1卡会在所有端口之间共享最大带宽。通过使用第二个主机控制器芯片组，传输通道跨两个端口共享，而不是四个端口。将每组两个端口专用于高达5 Gbps的带宽降低性能瓶颈，并有效地将总可用带宽提高到10 Gbps。
增强了UASP支持（USB Attached SCSI Protocol）的此USB 3.2 Gen 1控制器在与兼容操作系统配对时可比传统USB 3.2 Gen 1快70%。通过使用比传统USB BOT（仅限批量传输）更有效的协议，UASP技术通过允许同时处理多个命令来优化传输，显着增加数据传输速度，减少等待时间。有关更多详细信息，请查看下面的我们的UASP测试结果。
对于高功率USB设备，此PCIe USB 3.2 Gen 1卡包括一个可选的SATA或LP4电源连接器，可连接到您的系统电源，为USB 3.2 Gen 1总线供电设备提供每个端口高达900mA的功率（USB 2.0为500mA）。 USB 3.2 Gen 1卡还支持USB电池充电规范1.2（仅限苹果模式），可让您比标准USB 3.2 Gen 1端口更快地为兼容的苹果设备（iPhone和iPad）充电。
该控制卡符合USB 3.2 Gen 1标准，并向后兼容现有的USB 2.0 / 1.1设备。为增加多元化，USB 3.2 Gen 1 PCIe卡配备了一个标准配置支架，并包含一个用于在小型计算机中安装的低配置/半高度支架。
享有StarTech.com的2年保修，并提供免费终身技术支持。
在测试中，UASP在达到最大性能时的读取速度提高了70%，写入速度提高了40%，比传统USB 3.2 Gen 1快。
The PEXUSB3S42V 4-Port PCI Express USB 3.0 Card lets you add four USB 3.0 ports with two dedicated 5 Gbps channels to your PCIe x4-enabled PC. This independent port architecture improves USB 3.0 performance by transferring data on two individual channels to your computer, giving you faster file transfers.
When multiple devices are connected, traditional single bus USB 3.0 cards share your maximum bandwidth between all ports. By employing a second host controller chipset, the transmission channel is shared across two ports rather than four. Dedicating up to 5 Gbps for each set of two ports reduces performance bottlenecks, and effectively doubles your total available to bandwidth to 10 Gbps.
Enhanced with UASP support (USB Attached SCSI Protocol), this USB 3.0 controller performs up to 70% faster than conventional USB 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 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. See our UASP test results below for further details.
For high-power USB devices, this PCIe USB 3.0 card includes an optional SATA or LP4 power connector to connect to your system power supply and deliver up to 900mA of power per port to USB 3.0 bus-powered devices (500mA for USB 2.0). The USB 3.0 card also supports USB Battery Charging Specification 1.2 (Apple Mode only), letting you charge compatible Apple devices (iPhones and iPads) faster than a standard USB 3.0 port.
The controller card is compliant with USB 3.0 standards while offering backward compatibility with existing USB 2.0 / 1.1 devices. For added versatility, the USB 3.0 PCIe card is equipped with a standard profile bracket and includes a low-profile/half-height bracket for installation in small form-factor computers.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
Improved Performance with UASP
In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB 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, StarTech.com add-on USB 3.0 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.
Return Policy |
Time to Return |
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Standard Return Policy |
We offer a hassle-free 30-day returns policy for domestic (US) orders, excluding non-refundable items. Refund or Replacement within 30 days of the delivery date. All products that fall under the Standard Return Policy qualify for our 30-Day Hassle-Free Returns. Please see the section above for more details. |
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Replacement Only Return Policy |
Replacement within 30 days of the delivery date. |
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Manufacturer Only Return Policy |
Covered by the manufacturer's warranty. Please refer to the terms and conditions for the manufacturer's warranty or contact the manufacturer. |
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Holiday Extended Return Policies |
Extended Holiday Return Policy.Qualifying purchases of products displaying the " Extended Holiday Return Policy ", from November 1st, 2023 to December 25, 2023, are eligible for a Refund or Replacement until January 31, 2024. Extended Holiday Replacement-Only Return PolicyQualifying purchases of products displaying the " Extended Holiday Replacement-Only Return Policy ", from November 1st, 2023 to December 25, 2023, are eligible for a Replacement until January 31, 2024. |
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