
This card reader is vital for updating maps and software updates, as well as storing files (screenshots, etc.) that can be viewed on other computers. I have found this reader/writer to be the only way not to have to remove my Raymarine Axiom display to access the micro SD card slot for Navionics chart or software updates. I installed two units - one on the helm of the open flybridge, having good luck withstanding the weather and washing the boat.

JJC Camera SD TF Micro SD Memory Card Case Holder Organizer Box with Card Removal Tool & Lanyard - Water-Resistant Storage for 4 SD & 4 TF Cards
12 Review

π» LEEGLOAD 4 in 1 SD Card Reader Adapter for iPhone/iPad/Android/Computer and Digital Camera, Memory Card Adapter with USB C/USB A/Micro USB, Trail cam Card Viewer (Black)
13 Review

Neewer Black Memory Card Storage Holder - Waterproof, Anti-Shock with 14 Slots for Micro SD, TF, CF, SD and XD Cards
12 Review

IDENTIV USB Smartfold Type C SCR3500C
11 Review