USB 2.0 "thumbdrives" 1.1 compat?

[AbRASiON]

Anyone know if these newer babies starting to come out can be still ran in USB 1.1 ports?

I know USB 1.1 DEVICES work in USB 2.0 ports, but what about 2.0 devices?


I'd love one of those 256mb USB 2 drives the size of my thumb, but I refuse to buy one unless it works in all the machines I use

thanks.

- Scott

 

[paralazarguer]

*cough* FAQ *cough*

YES In order for it meet USB 2.0 spec it must be backwards compatible with USB 1.1. It will just run slower!

Another way of phrasing your question is:
"Hey! Does this device which says it's USB 2.0 compliant meet the USB 2.0 spec and work just like any other USB 2.0 device?"

 

[AbRASiON]

You positive man?

I mean those USB 2.0 hard disks / burners would be USELESS in 1.1 ports

- Scott

 

[paralazarguer]

I mean those USB 2.0 hard disks / burners would be USELESS in 1.1 ports

No they wouldn't. They would be just like USB 1.1 Hard disks / burners.

 

[paralazarguer]

Besides, the USB bus speed isn't the limiting factor, The flash speed is. USB 1.1 is still faster than most flash drives and certainly compact flash can write anyway.

 

[AbRASiON]

Except burning @ 40x in a 1.1 port would result in coaster upon coaster........

 

[Yomicron]

Originally posted by: AbRASiON
Except burning @ 40x in a 1.1 port would result in coaster upon coaster........

not really, a 40x burner would have underrun protection, plus it would probably default to 4x if it were attached to a 1.1 bus.

 

[TheCorm]

Originally posted by: Yomicron

Originally posted by: AbRASiON
Except burning @ 40x in a 1.1 port would result in coaster upon coaster........

not really, a 40x burner would have underrun protection, plus it would probably default to 4x if it were attached to a 1.1 bus.

He's right there...

Corm

 

[paralazarguer]

Except burning @ 40x in a 1.1 port would result in coaster upon coaster........

Yeah, like I've already said three times, it would run slower.

 

[AbRASiON]

Originally posted by: paralazarguer

Except burning @ 40x in a 1.1 port would result in coaster upon coaster........

Yeah, like I've already said three times, it would run slower.

IF it has burnproof, OR it would coaster otherwise, that's all I'm saying.
Either way @ 80$ US, I'm sorely tempted on this whole 256mb flash disk with a USB 2 i/face

 

[buleyb]

Originally posted by: AbRASiON

Originally posted by: paralazarguer

Except burning @ 40x in a 1.1 port would result in coaster upon coaster........

Yeah, like I've already said three times, it would run slower.

IF it has burnproof, OR it would coaster otherwise, that's all I'm saying.
Either way @ 80$ US, I'm sorely tempted on this whole 256mb flash disk with a USB 2 i/face

Don't all 24x or higher CDRs need underrun protection to handle the speed increments during a burn? I thought this was necessary to keep the burn from failing when the speed went from 24x-32x-36x-40x or something like that during a burn...

anyone else able to confirm this?

 

[AbRASiON]

Don't all 24x or higher CDRs need underrun protection to handle the speed increments during a burn? I thought this was necessary to keep the burn from failing when the speed went from 24x-32x-36x-40x or something like that during a burn...

anyone else able to confirm this?

I must admit, you have me there- I'm not certain, I beleive it may well be a possibility.

None the less this is a silly argument - who cares if USB 2.0 doesn't work or does work in USB 1.1 slots for cd burning - HOPEFULLY it does - that makes it nice tech but not effective

However for my little thumb memory cards I must admit it would be nice to know for sure - I'm FAIRLY certain based on the responces I've received around the place that it does - nothing concrete yet though.

 

[NOX]

I've been using my USB 2.0 Mini Drive for over a month now on my work comp which still supports 1.1 spec. When I go home I plug it in my 2.0 spec port and it works too (well it should).

So yes I would say it works (which others have already stated).

 

[zephyrprime]

Besides, the USB bus speed isn't the limiting factor, The flash speed is. USB 1.1 is still faster than most flash drives and certainly compact flash can write anyway.

That's not always true. Some compact flash is slow but others aren't. 24x compact flash pushes 3.5MB/s. It's entirely possible to make flash memory that is almost as fast as DRAM but stuff like that commands a big price premium right now. (check out AMD's flash memory info on their site.)

 

[paralazarguer]

That's reading. I specifically stated writing.

 

[buleyb]

What is the mean read/write speeds of flash these days?