Open PS2 Loader Version 1.0.0 release | GBAtemp.net - The Independent Video Game Community
PS2 - How to use USBUtil | PSX-Place
Amazon.com: Kaico Playstation 2 PS2 SATA HDD Hard Drive Adapter for Playstation Expansion Bay Port. Use with McBoot FMHD, OPL, GSM. SMS, HD Loader for Running CFW and ISO Direct from HD :
OPL Manager
USB Loader GX 3.0 (r1180)
Open PS2 Loader Updated to 1.1.0 - Hackinformer
How To] Properly Format and Install Games to PS2 USB External Hard Drive For OPL - YouTube