Use External USB Drives In this Quick Tips video I show you how to prepare and use a external USB drive. Remember that all folder names are case sensitive and best practice is to format your external USB drive in exFat! Any external hard drive should work. Chapters: 00:00 – Intro and Overview 00:17 – Prepare Folders and Copy Roms 01:40 – File System 01:50 – Play Test02:27 – Castlevania Aria of Sorrow (GBA)03:05 – Chu Chu Rocket (GBA) Music licensed through Artlist. All rights reserved. Copying and/or reproducing this content in any form without written permission is prohibited.