usb 2.0?

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paOol · #1 Post by **paOol** » Tue Aug 26, 2008 10:05 pm

this is probably a dumb question,

but are all 3 usb ports on the T61 usb 2.0?

ajkula66 · #2 Post by **ajkula66** » Tue Aug 26, 2008 10:08 pm

Yes they are.

What prompted you to ask, out of sheer curiosity on my part?

paOol · #3 Post by **paOol** » Tue Aug 26, 2008 10:22 pm

i was copying files from my ipod and it seemed really sluggish.
i guess its because the chord it comes with is not usb 2.0.

thanks though.

BeeJayEmm · #4 Post by **BeeJayEmm** » Wed Aug 27, 2008 6:03 pm

Must be a diminished chord.

(Sorry about that; It's a joke, son.)

#5 Post by **gator** » Wed Aug 27, 2008 6:22 pm

BeeJayEmm wrote:Must be a diminished chord. (Sorry about that; It's a joke, son.)

LOL! Good one ...

Question to tehe OP: what USB port were you using? The ones on the right or the left? There was some issue with the vertical USB port on the left side, let me see if I can dig that thread up ...

eecon · #6 Post by **eecon** » Wed Aug 27, 2008 6:29 pm

gator wrote:
BeeJayEmm wrote:Must be a diminished chord. (Sorry about that; It's a joke, son.)
LOL! Good one ...

Question to tehe OP: what USB port were you using? The ones on the right or the left? There was some issue with the vertical USB port on the left side, let me see if I can dig that thread up ...

I've been using my T61's vertical left side USB port with an external 7200 RPM HD for about a year now with no issues ..... now I'm really curious.

eecon · #7 Post by **eecon** » Wed Aug 27, 2008 6:34 pm

paOol wrote:i was copying files from my ipod and it seemed really sluggish.
i guess its because the chord it comes with is not usb 2.0.

thanks though.

Sometimes I notice sluggishness when copying lots of small files from "USB memory sticks" on numerous different makes and models of WinXP computers with USB 2.0 ports ..... sounds like it might be an OS issue?

DarkScythe · #8 Post by **DarkScythe** » Wed Aug 27, 2008 6:39 pm

Those are limitations with the USB sticks themselves, I believe. Depends on what type of flash chips they use and how their PCB is laid out or something. The Corsair Voyager GT 8GB was one of - if not the - fastest USB thumb drives from what I've heard.

eecon · #9 Post by **eecon** » Wed Aug 27, 2008 6:57 pm

DarkScythe wrote:Those are limitations with the USB sticks themselves, I believe. Depends on what type of flash chips they use and how their PCB is laid out or something. The Corsair Voyager GT 8GB was one of - if not the - fastest USB thumb drives from what I've heard.

Thanks for the info .... I always wondered why it was more of a random occurance. Sounds like it depends on which of the dozens of memory sticks I've used over the last few years.

Makes sense ..... Thanks

Paul Unger · #10 Post by **Paul Unger** » Thu Aug 28, 2008 9:51 pm

gator wrote:There was some issue with the vertical USB port on the left side, let me see if I can dig that thread up ...

There are a couple of "usb power / speed" threads. One here and another here. I started the first of the two threads referenced, but my issue was that the single usb port (and evidently, this is on different sides on different machines) would not power a Logitech mouse. Still doesn't . . . Hope this helps. Good luck.

hellosailor · #11 Post by **hellosailor** » Fri Aug 29, 2008 4:47 pm

IIRC the ironkey usb sticks (which are rather expensive military-grade security with different flash ROM chips) claim r/w speeds around 19-20mbps versus a more typical 3mbps from generic sticks, so there are real speed differences in usb sticks.

But there is something more going on with some of the usb ports on these computers, like the system message I got last week telling me my device (exernal hard drive, usb2 rated) could run faster if I connected it to a USB2 port. Which, in theory, the T61p ports ALL ARE.

Sloppy drivers??

eecon · #12 Post by **eecon** » Fri Aug 29, 2008 8:25 pm

hellosailor wrote: But there is something more going on with some of the usb ports on these computers, like the system message I got last week telling me my device (exernal hard drive, usb2 rated) could run faster if I connected it to a USB2 port. Which, in theory, the T61p ports ALL ARE.

Sloppy drivers??

Interesting ...... I've been using about a dozen different External HD's (plus some other USB 2.0 devices) each with different USB 2.0 cables on all three of my T61's ports and my advanced mini-dock's 4 ports and never got that message (and I'm connecting and disconnecting them all several times a day). This is with WinXP

hellosailor · #13 Post by **hellosailor** » Fri Aug 29, 2008 9:44 pm

Dunno. I went exploring in the Device Mangler and found that one USB controller is shown providing 500mA to each of two ports (must be the right side ports on this machine) while the other controller is not showing ANY power being provided. Even though it must provide the same 500mA to meet the USB specs, as I understand them.

They're "all the same" USB ports, except as George Orwell said, some are more equal than others.

Paul Unger · #14 Post by **Paul Unger** » Sat Aug 30, 2008 12:09 am

hellosailor wrote:I went exploring in the Device Mangler and found that one USB controller is shown providing 500mA to each of two ports (must be the right side ports on this machine) while the other controller is not showing ANY power being provided. Even though it must provide the same 500mA to meet the USB specs, as I understand them.

They're "all the same" USB ports, except as George Orwell said, some are more equal than others.

This is interesting, especially in relation to this thread. Where do you find how much power is being supplied to individual USB ports? I'd love to check mine.

EDIT: Disregard. Found it. Google returned this helpful page. Basically, it's on the "Power" tab of the first "USB Root Hub" Properties.

hellosailor · #15 Post by **hellosailor** » Sat Aug 30, 2008 1:11 pm

A similar tab may show poewr for internal USB ports--or may not. it is also curious that the internal port is shown as supporting so many USB devices, when there are nothing near that many physical ports present. Maybe the controllers can all support 8x each, but they're never implemented in the hardware? Oddly wasteful.

usb 2.0?

usb 2.0?

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