External powered vs usb powered?

[jackchou4444]

Does it matter which kind of drive you use for open ps2 loader? Thanks.

[dlanor]

Does it matter which kind of drive you use for open ps2 loader? Thanks.

The program itself has no way of knowing how your USB drive is powered, so to that extent the program does not care about it. But overloading the supply would still cause a hardware problem, now as always.

If the USB drive (all USB equipment on that bus rather) requires more current than the PS2 can easily deliver, then the voltage levels of the interface will suffer and the result may be faulty data transfers. That is the basic reason why some USB devices have connectors for externally supplied power.

Generally speaking, any large drive (3.5" or larger) or extra fast USB 2.0 HDD drives are likely to require higher currents, and so it would be safer to use external power supplies for such drives. But for most 'flash' drives (aka: thumb drives, or pen drives) the internal power from the USB connector is usually sufficient, not just for one such drive but even for several. And for a PS2 there is no point in going for the 'superfast' USB HDD drives anyway, as the PS2 interface is not capable of such speeds in any case. (It can't even handle full USB 1.1 speed, so 2.0 speed is way out of range.)

I have also successfully used small hubs with such flashdrive devices+keyboard+mouse and all this even together with a small 2.5" USB HDD, all powered from the PS2 USB bus. But that was with a v7 PS2 with a good internal PSU. I'm not sure that the same would be advisable with a v15 PSTwo unit (for example) which does not have the same kind of power supply. For normal use it might be better to be more cautious.

Best regards: dlanor

[armac911]

It's quite simple. If you go with 2.5" and power drain occurs you will hear the hard disk shutting and respinning. If your mobile rack lacks connector for external power suply, you can buy USB to miniUSB with 2x USB connectors.



The red one provides additional 500mAH power to your 2.5" hdd,totaling to about 1 A. And that's plenty of power for any 2.5" hdd. If you need to buy one just google for "USB power booster cable".

Any 3.5" HDD in external enclosure will come with external power supply as well. Thy are simply to big to be powered by USB.

[carlos_10111]

I have a 2.5" usb hdd and the enclosure has a small power connector where you can connect a power adapter. but i don't use a power adapter, rather i have a power-to-usb connector that came with the case. i just connect both to the PS2, and voila!