Pins USB
Completus Guidus ad USB 2.0, 3.0, et 3.1 (USB-C) Coniunctores
"Diagrammata pinout comprehensiva et descriptiones technicae pro omnibus principibus typis coniunctorum USB, inter quos Standard-A, B, Mini, Micro, et USB-C."
Hoc instrumentum web-based praebet dissectionem detallatam configurationum pin coniunctorum USB, functiones signalium, niveles voltus, et codificationes colorum per generations: USB 2.0, USB 3.0, et USB 3.1 (Type-C). Omnis informatio sequitur specificationes officiales a USB Implementers Forum (USB-IF).
Idealis pro ingeniosis, technicis, hobbyistis, et studentibus laborantibus cum systemibus embedded, DIY electronics, aut reparatione dispositivorum.
Quid est USB?
Universalis Series Bus (USB) est interface standardizatus pro coniungendo peripherals ad computatrices et dispositiva mobile. Supportat:
Translatio datarum
Delivery potestatis (usque ad 240W in USB PD)
Carga dispositivi
Hot-swapping
Quaque versio USB introducit novas features:
USB 2.0: Usque ad 480 Mbps
USB 3.0: Usque ad 5 Gbps
USB 3.1 Gen 2: Usque ad 10 Gbps
USB 3.2 / USB4: Usque ad 40 Gbps
Coniunctores physici variare per typum et generationem, sed omnes sequuntur strictas assignationes pin.
Coniunctores USB Typi Overview
| Coniunctor | Pins | Usus Casus |
|---|---|---|
| USB 2.0 A/B | 4 pins | Hosts, printers, keyboards |
| Mini/Micro USB 2.0 | 5 pins | Telephones vetustiores, cameras |
| USB 3.0 A/B | 9/11 pins | Data celeriter, disci externi |
| Micro USB 3.0 | 10 pins | Smartphones, tablets |
| USB 3.1 C (USB-C) | 24 pins | Reversibilis, alta potestas, data celeriter |
Note: USB-C supportat reversibilitatem, operationem dual-role, et Power Delivery (PD).
USB 2.0 – Coniunctores Standard A & B
Standard A: Standard B: ┌─────────┐ ┌─────────┐ │ 4 3 2 1 │ │ 1 2 │ └─────────┘ └─────────┘ ↑ ↑ Vista Plugs Vista Plugs
Configuration Pin (4-Pin)
| Pin | Signal | Color Code | Function |
|---|---|---|---|
| 1 | VCC (+5V) | Rubrum | Supply potestatis (usque ad 500mA) |
| 2 | Data - (D-) | Album | Differential data pair (-) |
| 3 | Data + (D+) | Viride | Differential data pair (+) |
| 4 | Ground | Nigrum | Return signal et potestatis |
Communicatio full-duplex utendo differential signaling
Sine ESD protection ex parte host? Utere diodes TVS!
Mini/Micro USB 2.0 – Standard A & B
Standard A: Standard B: ┌───────┐ ┌───────┐ │ 1 2 3 4 5 │ │ 1 2 3 4 5 │ └───────┘ └───────┘
Configuration Pin (5-Pin)
| Pin | Signal | Function |
|---|---|---|
| 1 | VCC (+5V) | Supply potestatis |
| 2 | Data - (D-) | USB 2.0 data negative |
| 3 | Data + (D+) | USB 2.0 data positive |
| 4 | Nihil | Detection host: connected to ground in hosts, open in devices |
| 5 | Ground | Commune ground |
Pin 4 enables automatic detection of host vs. slave
Used in older smartphones, GPS units, and digital cameras
USB 3.0 – Coniunctores Standard A & B
USB 3.0 A (9-Pin)
View Plugs: ┌─────────────┐ │ 5 6 7 8 9 │ │ 4 3 2 1 │ └─────────────┘
| Pin | Signal | Function |
|---|---|---|
| 1 | VCC (+5V) | Supply potestatis |
| 2 | D- | USB 2.0 data negative |
| 3 | D+ | USB 2.0 data positive |
| 4 | GND | Power ground |
| 5 | RX2- | USB 3.0 receive line (-) |
| 6 | RX2+ | USB 3.0 receive line (+) |
| 7 | GND | Signal ground |
| 8 | TX2- | USB 3.0 transmit line (-) |
| 9 | TX2+ | USB 3.0 transmit line (+) |
Backward compatible with USB 2.0
Speed: Up to 5 Gbps (SuperSpeed)
USB 3.0 B (11-Pin)
View Plugs: ┌─────────────┐ │ 9 8 7 6 5 │ │ 10 11 │ │ 4 3 │ └─────────────┘
| Pin | Signal | Function |
|---|---|---|
| 1 | VCC (+5V) | Supply potestatis |
| 2 | D- | USB 2.0 data negative |
| 3 | D+ | USB 2.0 data positive |
| 4 | GND | Power ground |
| 5 | TX2- | USB 3.0 transmit line (-) |
| 6 | TX2+ | USB 3.0 transmit line (+) |
| 7 | GND | Signal ground |
| 8 | RX2- | USB 3.0 receive line (-) |
| 9 | RX2+ | USB 3.0 receive line (+) |
| 10 | DPWR | Power provided by device (e.g., bus-powered hub) |
| 11 | GND | Return for DPWR |
Rarely used; replaced by USB-C in modern devices
Micro USB 3.0 (10-Pin)
View Plugs: ┌─────────────────────┐ │ 1 0 9 8 7 6 │ │ 5 4 3 2 1 │ └─────────────────────┘
| Pin | Signal | Function |
|---|---|---|
| 1 | VCC (+5V) | Supply potestatis |
| 2 | D- | USB 2.0 data negative |
| 3 | D+ | USB 2.0 data positive |
| 4 | ID | OTG identification (host/device role) |
| 5 | GND | Power ground |
| 6 | TX2- | USB 3.0 transmit line (-) |
| 7 | TX2+ | USB 3.0 transmit line (+) |
| 8 | GND | Signal ground |
| 9 | RX2- | USB 3.0 receive line (-) |
| 10 | RX2+ | USB 3.0 receive line (+) |
Used in early smartphones and tablets before USB-C adoption
Supports On-The-Go (OTG) mode
USB 3.1 Type-C (24-Pin) – Reversible Connector
View Plugs (Top Side): ┌────────────────────────────┐ │ 1 2 3 4 5 6 7 8 9 10 11 12 │ └────────────────────────────┘ │ 13 14 15 16 17 18 19 20 21 22 23 24 │ └────────────────────────────┘
Configuration Pin (24-Pin)
| Pin | Signal | Function |
|---|---|---|
| 1 | GND (A1) | Ground |
| 2 | TX1+ (A2) | SuperSpeed transmit (+) |
| 3 | TX1- (A3) | SuperSpeed transmit (-) |
| 4 | Vbus (A4) | +5V supply potestatis |
| 5 | CC1 (A5) | Configuration Channel (detects orientation, power roles) |
| 6 | D+ (A6) | USB 2.0 data positive |
| 7 | D- (A7) | USB 2.0 data negative |
| 8 | SBU1 (A8) | Sideband use (for video/audio, alternate modes) |
| 9 | Vbus (A9) | +5V supply potestatis (second path) |
| 10 | RX2- (A10) | SuperSpeed receive (-) |
| 11 | RX2+ (A11) | SuperSpeed receive (+) |
| 12 | GND (A12) | Ground |
| 13 | GND (B12) | Ground (symmetric side) |
| 14 | RX1+ (B11) | SuperSpeed receive (+) |
| 15 | RX1- (B10) | SuperSpeed receive (-) |
| 16 | Vbus (B9) | +5V supply potestatis |
| 17 | SBU2 (B8) | Sideband use |
| 18 | D- (B7) | USB 2.0 data negative |
| 19 | D+ (B6) | USB 2.0 data positive |
| 20 | CC2 (B5) | Configuration Channel (backup) |
| 21 | Vbus (B4) | +5V supply potestatis |
| 22 | TX2- (B3) | SuperSpeed transmit (-) |
| 23 | TX2+ (B2) | SuperSpeed transmit (+) |
| 24 | GND (B1) | Ground |
Fully reversible plug
Dual-role data flow (host/device)
Supports USB Power Delivery (up to 240W)
Supports DisplayPort and HDMI via Alternate Mode
Design Tips for Engineers
Always route D+/D- as differential pairs with controlled impedance (~90Ω)
Keep Vbus trace short and wide for better current handling
Use TVS diodes on D+/D- lines for ESD protection
Add pull-up resistors on CC pins for proper negotiation
Follow USB-IF compliance guidelines for certification
Standards Compliance
USB 2.0: USB-IF Specification 2.0
USB 3.0: USB 3.0 Specification (Rev. 1.0)
USB 3.1: USB 3.1 Specification (Rev. 1.0)
USB-C: USB Type-C Specification (Rev. 2.1)
All modern devices must comply with these standards for interoperability.
