Memory Cards

You can use optional memory cards with the chartplotter. Map cards allow you to view high-resolution satellite imagery and aerial reference photos of ports, harbors, marinas, and other points of interest. You can use blank memory cards to record Garmin Quickdraw™ Contours mapping, record sonar (with a compatible transducer), transfer data such as waypoints and routes to another compatible chartplotter or a computer, and use the ActiveCaptain® app.

The internal card readers support up to 32 GB memory cards, formatted to FAT32 with speed class 4 or higher1. Use of an 8 GB or larger memory card with speed class 10 is recommended.

NOTE: When you insert a new memory card into the chartplotter, the chartplotter starts writing private information onto the newly-added card.

Model

Memory Card Location

Memory Card Type

Memory Card Size and Format

8x10

Back of the device

microSD®

Up to 32 GB, FAT321

8x12

Back of the device

microSD

Up to 32 GB, FAT321

8x16

Back of the device

microSD

Up to 32 GB, FAT321

8x17

External card reader

SD®

Up to 1 TB, exFAT

Up to 32 GB, FAT32

8x22

External card reader

SD

Up to 1 TB, exFAT

Up to 32 GB, FAT32

8x24

External card reader

SD

Up to 1 TB, exFAT

Up to 32 GB, FAT32

87xx

External card reader

SD

Up to 1 TB, exFAT

Up to 32 GB, FAT32

1 As of software version 34.00, you can connect an external USB card reader and use a memory card up to 1 TB, formatted to exFAT with speed class 10 or higher.
GUID-25CCEC48-337E-47C0-8B89-5C35CCDB65AC v34
January 2026