Touchscreen Controls for a Connected Computer (GPSMAP 9500 Black Box)

NOTICE

To prevent corrosion due to moisture, you must use Garmin® GPSMAP® accessory cables when connecting the chartplotter to the computer. Using different cables voids your warranty.

You can connect the chartplotter to a computer to see the computer screen and to control the computer using a touchscreen. To see the computer screen, you must connect the computer to the HDMI IN port and connect the touchscreen to the HDMI OUT port. To control the computer using the chartplotter touchscreen, you must connect the computer to the USB DRD port and connect the touchscreen to the USB port.

The HDMI® Cable (010-12390-20) is 4.5 m (15 ft) long. If you need a longer cable, you should use an active HDMI cable only. You need an HDMI coupler to connect the two HDMI cables.

The recommended Garmin USB Cable (010-12390-14) is 4.5 m (15 ft) long. If you need a longer cable, you should use a USB hub, USB repeater, or USB extension cable only.
NOTICE

To avoid potential communication errors, you should use the correct USB cable for your chartplotter. You should not use an adapter to change the USB connector type on an older cable.

You must make all cable connections in a dry environment.


Block diagram

Devices

Item

Device

1

Computer

2

GPSMAP chartplotter

3

Touchscreen monitor

Connections

From

To

Cable

1

Computer's HDMI OUT port

2

Chartplotter's HDMI IN port

Garmin HDMI Cable (010-12390-20)

3

Chartplotter's HDMI OUT port

4

Monitor's HDMI IN port

Garmin HDMI Cable (010-12390-20)

5

Monitor's USB port

6

Chartplotter's USB port

Garmin USB-C to USB-A Cable (010-12390-12)

7

Chartplotter's USB DRD port

8

Computer's USB port

Garmin USB-C to USB-A Cable (010-12390-14)

GUID-8D60E520-A4CC-4669-8D45-79C61C3778A4 v1
October 2025