green arrow in system tray

[Vic]

Aren't USB devices 'hot-plugable'? Why is there a green arrow in the
system tray to turn off USB to unplug?

Thanks
Vic

 

[Bob I]

Hot-plugable means you don't have to power off the PC to connect or
disconnect the peripheral. Using the "safely disconnect" routine
prevents data corruption, and has nothing to do with "hot-plugable"
hardware capabilities.

 

[Vic]

Oh, I see Bob. Then that's why only the 'card readers' are shown in the
disconnect tree and not the USB keyboard. Funny though, I've NEVER used
it to disconnect to read the cameras smart-card and never incurred data
loss as far as I know!

Thanks for your reply
__

 

[Lem]

Oh, I see Bob. Then that's why only the 'card readers' are shown in the
disconnect tree and not the USB keyboard. Funny though, I've NEVER used
it to disconnect to read the cameras smart-card and never incurred data
loss as far as I know!

Thanks for your reply
__

The chance for data corruption is associated with devices that your
write to rather than read from. If you are in the middle of a write to
your USB device when you disconnect it, you probably will cause a
problem. Similarly, some apps may cache data to be written, so if you
just disconnect the device, you may not flush the cache and thus fail to
write some data.

 

[Vic]

Very helpful information. Thanks guys!

Vic
___

The chance for data corruption is associated with devices that your
write to rather than read from. If you are in the middle of a write to
your USB device when you disconnect it, you probably will cause a
problem. Similarly, some apps may cache data to be written, so if you
just disconnect the device, you may not flush the cache and thus fail to
write some data.

--
Lem MS MVP -- Networking

To the moon and back with 64 Kbits of RAM and 512 Kbits of ROM.
http://en.wikipedia.org/wiki/Apollo_Guidance_Computer