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Belkin USB 2.0 Cable USBA-USBB in Charcoal 1.8m

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Confused yet? Further complicating matters: The number scheme around USB 3 has been in flux, which has made references to these ports something of a swamp. Until recently, many USB-C ports carried the USB 3.1 label ("USB 3.2" was not yet a thing) in Gen 1 and Gen 2 flavors, and some spec sheets continue to reference the older name, along with SuperSpeed branding. In a confusing twist, the USB-IF decided to eliminate the use of "USB 3.1" in favor of these various flavors of USB 3.2, as outlined below in this handy decoder chart...

IF(USB Implementers Forum)组织发布USB 1.0标准以来,USB标准经历了 USB 1.1、USB 2.0、USB 3.0、USB 3.1、USB 3.2多个版本的发展。2019年,USB-IF组织发布了最新的USB4标准,为USB接口带来了全新的标准规范。具体可以看下面这张图示: USB-C is electrically compatible with older USB 3.0 ports. But because of the shape of the newer port, adapters or cables with appropriate plugs are indeed required if you want to connect anything that doesn't have the USB-C oval shape. Micro USB:So-called Micro USBversions of both USB-A and USB-B also exist - smaller versions than their base counterparts, popular on mobile devices. Older but now obsolete "mini USB" versions can also be found on many old devices.

To reduce confusion, the USB-IF also intends to do away with numbered USB versions in the future, instead encouraging device makers to refer to a port's top speed, as in "USB 20Gbps." We're in favor of that.

USB Type-B连接器用于大型设备,最常用的是打印机设备,由于这些是相对较大型的连接器,因此在便携式消费设备中很少见到它们。除了这个外,在数据储存和采集、视频传输、游戏硬件接口上也能看到它的身影。 The date the document that announces the end-of-sale and end-of-life of a product is distributed to the general public. top speed of 12Mbps, 2.0 – top speed of 480Mbps, 3.0 – top speed of 5Gbps, 3.1 – top speed of 10GbpsMini USB接口,是一种小型的USB接口,其指标与标准USB相同,但是加入了ID针脚(用于区分设备是主机还是外设),以支持OTG(On The Go,该功能允许在没有主机的情况下,实现设备间的数据传送)功能。Mini USB接口主要分为Mini-A和Mini-B两种,样貌如下: The presence (or absence) of a USB-C port is increasingly becoming a consideration when buying a PC. If you buy an ultrathin laptop, it will almost certainly have at least one USB-C port, which will catapult you into the ecosystem automatically. If you're more of a lover of desktops, you're certain to find the ports there, too, with at least one on the motherboard-side I/O panel and likely more on high-end and gaming desktops. Some desktops and aftermarket PC cases are putting one on the front panel, too. (Desktop DIY types should know, though, that a USB-C port on a PC case's front or top will require a specific USB-C header connector at the motherboard end, and only late-model motherboards will have these.)

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