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ADB Hotswapping
Posted by: uniserver on 2015-11-03 10:27:26 but do we know this, just like a Solar Flare "Could" blow up the electrical grid... but will it? Humm... maybe.
Posted by: Paralel on 2015-11-03 13:26:57 Bottom line, its possible to hot-swap, but you do so at the risk of possibly destroying your device and/or ADB system interface.
Posted by: uniserver on 2015-11-03 14:00:26 NA... no risk... sorry.
Posted by: TheWhiteFalcon on 2015-11-03 14:10:37 No risk, the blown fuses and the fact that the design spec says don't are all just fantasies of our minds, I guess.
Posted by: uniserver on 2015-11-03 14:37:43 Exactly. You have no idea what caused that fuse to blow... so using it against me to make your conspiracy is moot. people do stupid crap, but hot plugging ADB is not one of them.
Posted by: Trash80toHP_Mini on 2015-11-03 19:42:27 . . . it's not particularly bright either. Go KVM switch. [🙂] ]'>
Posted by: uniserver on 2015-11-03 19:57:14 [😀] ]'>
Posted by: rsolberg on 2015-11-03 20:15:54 Then there's FireWire... Supposed to be hot pluggable, but easy for careless people to fry things. I remember countless DV camcorders with fried FireWire ports and a few that were completely dead from students and staff misaligning the 6 pin plug when connecting to the computer's powered port. The cameras all had a 4 pin unpowered connection, so it seems there was no protection there. The user would invert the plug when connecting to the computer, powering the data lines on the device. On eMacs and iBooks, it would kill the FireWire port on the computer rather than the camera, blowing a fuse that could be desoldered and replaced. The ubiquitous iMac G3 slot loaders would wreck the cameras. We tried to institute a policy of connecting the cable to the computer first to avoid the mismatch, but... I ended up having to solve the problem by hot gluing cables to computers. Sometimes behaviour has to be modified by the environment.
Posted by: Trash80toHP_Mini on 2015-11-03 21:23:43 Nice fix! Gotta love it. Keep it simple for stupids. :🙂
Posted by: Gorgonops on 2015-11-04 08:52:16
Posted by: uniserver on 2015-11-04 09:49:57
Posted by: Schmoburger on 2015-11-04 10:56:07 Not gonna lie... this thread has taken a direction that I enjoy. 😀 😀
Posted by: Schmoburger on 2015-11-04 11:00:33 are you suggesting they blew them some other way besides hot swapping? (Urinating on the port? Probing it with a bent paperclip?) This is the 21st century... If it sounds too stupid to be done, there is every chance somebody has done it! lol Kinda like Rule 34... But not pertaining to pr0n in this instance.
Posted by: trag on 2015-11-04 13:44:29 Exactly. You have no idea what caused that fuse to blow... so using it against me to make your conspiracy is moot. people do stupid crap, but hot plugging ADB is not one of them. I explained the exact mechanism that blows the fuse. It's simple physics.
Posted by: uniserver on 2015-11-04 14:33:44 If we want specifics. I have only changed (2) ADB fuses and they were physically blown, as in you could see it. And they were the earlier Revision SE/30... The shape was round yellow and disk like.. about the size of a dime. Other wise I haven't had to change any of the other style of fuses. and have never had to change an ADB controller. and never had ADB issues with any MB other then with that specific SE/30 RevA's, and that round disk like fuse they used for a short period of time. I have re-capped so many boards its just obscene. I wouldn't lie just to prove a point. Its just fact that i am absolutely correct. Hot plugging ADB does absolutely nothing to harm your main board other then maybe slow your mouse speed down when you plug it back into the original machine. Witch gets fixed with a reboot.
Posted by: Paralel on 2015-11-04 17:47:06 I think we have to look at it this way. Has anyone blown an ADB device or ADB connection on a logic board by swapping with a system that is powered down? If the answer is "no", and we have at least anecdotal evidence that it has happened when people tried to hot-swap, we have to accept that hot-swapping does indeed carry some risk above that seen with swapping cords while system is off.
Posted by: rsolberg on 2015-11-04 18:25:46 I have no qualms about hotswapping ADB. at a MUG event ten years ago, a veteran AASP shop owner compared it to speeding: "You're not supposed to do it, but pretty much everybody does. The difference is that the Mac probably won't crash." The only ADB failures he could recall were related to S-VHS/S-Video equipment being connected to the ADB chain. If I cause damage to a machine by my own actions, I'll admit my stupidity and take responsibility. I take no responsibility if someone else takes this as advice and causes a catastrophic cascading global telecommunications and power grid failure by hot plugging ADB to a toaster.
Posted by: Trash80toHP_Mini on 2015-11-04 19:12:03 LOL! Live Free and Plug Hot! [😀] ]'>
Posted by: TimHD on 2015-11-05 08:59:49 No, ADB's not hot swappable per the spec. It's a maybe you can do it without damage, but really should not. That said, mechanical the KVM switches do it, but the rotary switch likely reduces the chance of damage significantly over hot plugging ADB manually.BTW: Peripherals would be the forum of choice. Here's a link to an ADB 4 way switch currently available on eBay. http://www.ebay.com.au/ulk/itm/252153542078
Posted by: uniserver on 2015-11-05 09:55:15 looks like a reasonable buy too… if you get it, open it up, i am curious as to what is all in there.
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