BrightSign 4K242 Hardware - Manual (Page 17)

BrightSign 4K242, 4K1042, 4K1142
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All information provided in this reference manual applies to products under development. The characteristics and specifications of these products are subject to
change without notice. BrightSign assumes no obligation regarding future manufacturing unless otherwise agreed to in writing. © BrightSign LLC, 2015
USB
The 4K1042 has a single USB 2.0 port, and the 4K1142 has two USB 3.0 ports and a single USB 2.0 port. All ports are
capable of transfer speeds up to 480 Mbit/s. The maximum length for a USB cable is 5 meters. The following tables
illustrate the pinout of the USB 2.0/3.0 host ports:
USB 2.0
pin Description pin Description
1 VBUS 2 D-
3 D+ 4 Ground
USB 3.0
pin Description pin Description
1 VBUS 2 D-
3 D+ 4 Ground
5 StdA_SSTX- 6 StdA_SSTX+
7 Ground 8 StdA_SSRX-
9 StdA_SSRX+
3.5mm Audio Connector
All 4K models have a single 3.5mm female audio connector, which transmits an analog stereo signal. The full-scale
voltage output of the audio is 2V RMS. The minimum load impedance of the audio connector is 32Ω.
Note: The BrightSign expansion module allows you to drive up to three sets of 5 Ω headphones directly.
The audio connector has the following pinout:
• Tip: Left audio