Archived from groups: alt.comp.hardware.homebuilt (
More info?)
"Dorothy Bradbury" <dorothy.bradbury@ntlworld.com> wrote in message
news
f1Sd.176$Q41.99@newsfe1-gui.ntli.net...
> Easiest is to...
> 1) Check if the SBC maker has an optional card
> ---- often they are small, low-profile - at a price
> 2) Use a standard PCI card, assuming you have a PCI slot
> ---- SBC covers quite a range - check industrial board suppliers
>
> Check whether you are getting USB 1.1 or USB 2.0, a lot of
> industrial PC specs love to bypass exactly what USB spec.
>
> Irritating how a lot of S370 SBCs out there are USB1.1, when
> a Tualatin 1-1.2Ghz is a great CPU with very low-dissipation.
>
> If your application can use USB2 or Firewire - go Firewire:
> o USB isn't that reliable -- USB drives get lost on XP/Win2k
> o USB isn't that quick -- 480Mbps shared/peak
> ---- Firewire 400 is often quicker re lower CPU util & real world
> ---- Firewire 800 is not uncommon, and faster still
> o USB is cable length limited -- repeaters help, but watch length
> o USB is power limited -- laptop ports the worst, desktop a bit better
> ---- Firewire 6-pin can supply higher voltage & current than USB2
> ---- so for industrial applications Firewire can be attractive
>
> Watch what current draw you can pull (if required).
> --
> Dorothy Bradbury
> www.dorothybradbury.co.uk for quiet Panaflo fans
>
>
Thanks for the reply Dorothy. I am the maker and probably the sole user of
my SBC. I just want to add a USB jumpdrive or the like to my SBC project
and can't seem to find any information on how to add USB ports. I have seen
lots of stuff on how to make peripherals, but nothing on actually adding USB
to the board.
JaYmZ
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