This was drastically slower than the PS2’s native DVD drive (5.28 MB/s at 4x speed) or the internal HDD interface (ATA/IDE, up to 66 MB/s).
Before the widespread adoption of OPL (Open PS2 Loader) and modern network-attached storage, there was a unique commercial product: the . Also known as the USB Advance or USB Extreme (depending on the region or version), this device was one of the first successful attempts to boot PS2 games directly from a USB mass storage device. usb extreme ps2
It works with both "Fat" and "Slim" PS2 models, including those that do not support internal hard drive expansions. How to Use USB Extreme This was drastically slower than the PS2’s native