Extron Electronics USB A to 4-Pin User Manual

USB A to 4-Pin Captive Screw Terminal Wiring

Wiring Instructions

This card illustrates how to connect a standard USB A/B or A/mini-B cable to the AAP/MAAP
using the captive screw connector. As shown in the figure below, USB cable wires (stripped
from the USB B end of the cable) are passed through the captive screw connector in the same
order as in the USB A connector.

For step-by-step wiring instructions, see the other side of this card.

USB A
Connector

432

1

Stereo
Jack

Front

USB A to Captive Screw AAP/MAAP

Side

USB cable

4
3
2
1

Pin# Signal Typical Color

1 +5 (Vbus) Red

2 Data- White

3 Data+ Green

4 Gnd Black

USB A to 4-Pin Captive Screw Terminal Wiring

(continued)

To wire the USB connector on this AAP/MAAP:

1. Cut the Type B connector from a standard USB cable (A-to-B or A-to-mini-B). Strip away
about 0.5” (1.3 cm) of the cable jacket to expose the four wires inside.

2. Using an ohm tester, check which wire corresponds to pins 1, 2, 3,
and 4. (For reference, see the figure on the right.) Typical USB wiring
assignments are: red for pin 1, white for pin 2, green for pin 3, and
black for pin 4.

3. Attach the wires in the correct order to the captive screw connector.
(For reference, see the figure on the other side of this card).

CAUTION

Make sure to test the wires (see step 2) before attaching them to the captive

USB Type A Connector
Pin Assignments

screw connector and/or putting the AAP/MAAP into use. Extron is not
responsible for equipment damage or faulty operation due to improper wiring.

Cable Length Limitation

The USB specification limits the length of a cable between full speed devices to

16 feet, 4.8 inches (5.0 meters). For low speed devices, the cable limit is 9 feet, 10 inches
(3.0 meters).

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4

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