Product details
This compact USB‑C tester plugs directly into a port to probe every signal line, using the internal ESD protection diodes of connected TYPE-C ICs OR PD CONTROLLER. You can directly check the USB-C Port and all lines connecting to the Type-C chip directly or PD chip , and also know what protocol is activated on this input.
The tester can check all these pins
Power & Configuration
CC1, CC2 (A5, B5): Configuration Channel – determines plug orientation, establishes host/device role, negotiates power level, and signals alternate modes.
Data PINS
D+, D- (A6, A7, B6, B7): USB 2.0 differential pairs – always connected regardless of plug orientation.
TX/RX pairs (A2/A3/A10/A11 and B2/B3/B10/B11): SuperSpeed signals for:
USB 3.1 Gen 1/2
Thunderbolt 3/4
DisplayPort (via Alt Mode)
These lines are flipped depending on plug orientation.
Sideband / Auxiliary
SBU1, SBU2 (A8, B8):
DisplayPort Alt Mode (AUX channel)
Analog audio (e.g., headphone dongles)
USB Debug Accessory Mode (UART)
USB-C Receptacle Pinout (Signal & Configuration Pins)
| Pin Name | Count | Side | Function(s) |
|---|---|---|---|
| A5 (CC1), B5 (CC2) | 2 | Both | Configuration Channels: plug orientation, role negotiation (host/device), PD and power capability, and Alt Mode entry. |
| A6, A7, B6, B7 (D+, D-) | 4 | Both | USB 2.0 differential data lines. |
| A2, A3 (TX1+, TX1-) | 2 | Top (A side) | SuperSpeed transmit pair (USB 3.x, DP, TB). |
| A10, A11 (RX1+, RX1-) | 2 | Top (A side) | SuperSpeed receive pair (USB 3.x, DP, TB). |
| B2, B3 (RX2+, RX2-) | 2 | Bottom (B side) | SuperSpeed receive pair (mirror of A10/A11). |
| B10, B11 (TX2+, TX2-) | 2 | Bottom (B side) | SuperSpeed transmit pair (mirror of A2/A3). |
| A8 (SBU1), B8 (SBU2) | 2 | Both | Sideband Use: DisplayPort AUX, analog audio, or debug UART. |
No HS, SBU, or CC → No CC negotiation; no PD connection .
HS detected, SBU absent → Likely USB‑3.x only.
HS & SBU detected → Indicates support for DP/Thunderbolt or USB‑3.x with SBU-based features.
SBU only → Debug or audio path present, but no USB‑3.x.
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