Universal Serial Bus (USB) - 通用串行總線

Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply between personal computers and their peripheral devices. Released in 1996, the USB standard is currently maintained by the USB Implementers Forum (USB IF). There have been three generations of USB specifications: USB 1.x, USB 2.0 and USB 3.x; the fourth called USB4 is scheduled to be published in the middle of 2019.
通用串行總線 (USB) 是一種行業標準，它為個人計算機及其外圍設備之間的連接，通信和電源建立電纜，連接器和協議的規范。USB 標準目前由 USB Implementers Forum (USB IF) 維護，于 1996 年發布。USB 規格有三代：USB 1.x，USB 2.0 和 USB 3.x，第四個名為 USB4 的計劃于 2019 年中期發布。

1. Receptacle (socket) identification

Available receptacles for each connector

receptacle [r?'sept?k(?)l]：n. 花托，容器，插座 deprecate ['depr?ke?t]：vt. 反對，抨擊，輕視，聲明不贊成 Low-speed，LS Full-speed，FS High-speed，HS SuperSpeed，SS SuperSpeed+，SS+

Two USB 3.0 Standard-A receptacles (left) and two USB 2.0 Standard-A receptacles (right) on a computer’s front panel.

2. USB Type-C (USB-C)

USB Type-C (USB-C) is a 24-pin USB connector system, which is distinguished by its two-fold rotationally-symmetrical connector.
USB Type-C (USB-C) 是一種 24 針 USB 連接器系統，其特點是雙重旋轉對稱連接器。

USB-C plug

USB-C port (receptacle)

3. The type-A plug (left) and type-B plug (right)

Pin configuration of type-A and type-B plugs

4. The Mini-A plug (left) and Mini-B plug (right)

5. The Micro-A plug (left) and Micro-B plug (right)

6. USB 3.0 Micro-B SuperSpeed plug

7. Various USB connectors along a centimeter ruler for scale

From left to right:
Micro-B plug -- UC-E6 [a] -- Mini-B plug -- type-A receptacle [b] -- type-A plug -- type-B plug
[a] UC-E6 is a proprietary non-USB connector.
[b] Inverted, so the contacts are visible.

proprietary [pr?'pra??t(?)r?]：n. 所有權，所有人 adj. 所有的，專利的，私人擁有的 invert [?n'v??t]：vt. 使...轉化，使...顛倒，使...反轉，使...前后倒置 n. 顛倒的事物，倒置物，倒懸者 adj. 轉化的

References

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