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Thread ID: 113909 2010-11-09 07:45:00 USB cable pcuser42 (130) Press F1
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1151602 2010-11-09 07:45:00 I recently purchased a hard drive enclosure, but instead of the usual USB B port, it has a USB A port instead (as found on the computer). An A-A cable was provided and the enclosure works fine, however what I'd like to know is why use an A port instead of a B port? The enclosure is very simple: only one USB port and power. pcuser42 (130)
1151603 2010-11-09 18:05:00 B ports, being so tiny are more susceptible to damage and mis-allignment problems. Personally I'd be a lot happier with the larger A port on everything. Smaller ain't always better.

I have an enclosure that I suspect of causing mobo damage, and the silly little port is one of the suspect bits.
Paul.Cov (425)
1151604 2010-11-09 18:07:00 B ports, being so tiny are more susceptible to damage and mis-allignment problems. Personally I'd be a lot happier with the larger A port on everything. Smaller ain't always better.

I'm talking about this type (www.msprojectstart.org) of port?
pcuser42 (130)
1151605 2010-11-09 18:56:00 As paul mentioned, the smaller ports are susceptible to damage. Having the larger port on the USB drive is actually a good thing.
Those small ones always feel to me a problem waiting to occur.
wainuitech (129)
1151606 2010-11-09 19:31:00 B ports, being so tiny are more susceptible to damage and mis-allignment problems
Seems to be some confusion about size and shape here. Type A is rectangular and original type B is almost square. Newer type B are trapezoid shape or square or round (there are at least 14 variations on type B, including several camera-brand-specific ones).
I reckon that there's little difference in durability between the two originals. It is useful to have different shape at each end of the cable - makes it easier for older eyes to figure out which end goes where. Original type B as used on many external drive boxes and printers is probably the sturdiest of them all with very little risk of damage or misalignment.

pcuwv - probably the manufacturer had an over-stock of the rectangular sockets this year!
coldot (6847)
1151607 2010-11-09 21:51:00 A/A cables are much more common than A/B and a lot of people already have one. mzee (3324)
1151608 2010-11-09 23:10:00 Mini-B and Micro-B are more delicate.
Normal sized B would be OK.
Agent_24 (57)
1151609 2010-11-10 01:13:00 Seems to be some confusion about size and shape here.

Hence why I provided a picture of what I was expecting.
pcuser42 (130)
1151610 2010-11-10 03:21:00 I think the real question is why not use an "A" type connection on an external hard drive...
I have a couple of 2.5" hard drive enclosures from China both with A to A type connections (its actually very common, pretty much the standard in China) and I have found these enclosures to be extremely robust, I have never had a problem with connectivity, but have had a few people come over with the mini USB "B" type and it being broken in some way (through carelessness or whatever).

Replacement cables are not hard to find either, I was browsing through PBtech the other day looking for a micro usb for my new phone and stumbled on a shelf full...
Deimos (5715)
1151611 2010-11-10 06:29:00 Yeah, I was cunfusing it with the mini type, which I despise.
The one you've pictured is typical of a lot of peripherals, especially printers.

I don't know of any good reason for them swapping it for the flat spade type connection.
Maybe they just want to prevent people from using the cables as extenders... chaining a bunch of cables together. The USB system does have a limited cable lenght in order to ensure speeds are not compromised.
Paul.Cov (425)
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