Wikipedia:Reference desk/Archives/Computing/2020 August 4

= August 4 =

Forcing licensing in a Flickr group
I've created a Flickr group for people to add images to on a particular subject. is there any way I can enforce that images uploaded to it have a particular licence - in particular CC-BY-SA? rossb (talk) 15:36, 4 August 2020 (UTC)


 * First question: are you sure you want to do that? All my images are CC0. Do you really want to exclude people like me? Maybe a list of licenses would be better than just the one.


 * Second question: what is to stop the uploader who stole an image from some webpage simply lying about the license? --Guy Macon (talk) 21:33, 4 August 2020 (UTC)


 * This page says admins can set rules for images: . Does not specify if licensing is one of the rules you can set.  There is a link at the bottom of the page to get more help.  RudolfRed (talk) 22:25, 4 August 2020 (UTC)


 * the reason for choosing CC-BY-SA is that I want to be able to upload them (if suitable) to Wikimedia Commons - yes this is only one of the forms of licence acceptable in that context, but given that most of the contributors will be unaware of licensing issues it would seem too complicated to provide for a choice. And what is to stop the uploader who stole an image from simply lying? - Nothing - just as in Wikipedia or Commons I could upload someone else's copyright material and claim it for my own - the sanction is that it could or would be detected and reported, and since the aim is to post stuff to Commons the same would apply here. But to answer my own original question, there doesn't seem to be a way of achieving this automatically. rossb (talk) 06:09, 6 August 2020 (UTC)
 * If no choice is given the meaning of the option is more likely to be ignored by well-meaning but uninformed users. 93.136.126.184 (talk) 17:45, 9 August 2020 (UTC)

Strange 30-pin connector on a server motherboard
I am setting up a server, and I ran into a connector that I don't recognize and cannot find with a web search. I can of course just ignore it, but I am really curious. I do a lot of work involving PC hardware and I it isn't often that I see see something I don't recognize.

The motherboard is a [ Gigabyte MD71-HB1 ].

The webpage for the MB is at [ https://www.gigabyte.com/Server-Motherboard/MD71-HB1-rev-1x ].

A high-resolution image is at [ https://static.gigabyte.com/Product/101/7118/2019102917435695132e06d83419cdc3ef07132502e6a9e1_big.png ]

(The connector is bottom edge, center, right below the thing with the 8 spokes.)

The manual is at [ https://download.gigabyte.com/FileList/Manual/server_manual_MD71-HB1_e_v10.pdf ].

The connector (BP_1 HDD Backplane Board Header) with pinouts is on page 23 of the manual.

I have searched and searched and can't find anything about this connector.

Any ideas? --Guy Macon (talk) 21:29, 4 August 2020 (UTC)


 * It seems to be a Gigabyte proprietary system-management connector. From the very few photos I can find of a backplane for this board, it seems the backplane connects to most of the various ports 20-34ish, including this one. This port just has various i2c connections (those SCL/SDA pairs) and its cousin System Management Bus - that's low-bandwidth stuff you expect to be used only for device discovery and configuration. Other than that, the only interesting thing is the BPMI pins. I can't find anything at all about that, and it seems to be unique to Gigabyte or Dell (and the Dells are I think Gigabyte-made); one might guess from the name that its "backplane p?? management interface" or the like. The whole connector bears no resemblance to a U.2 or SAS or SATA connector, so I don't believe it's carrying any of the data for the drives (they're just on the regular connectors for that). -- Finlay McWalter··–·Talk 21:12, 5 August 2020 (UTC)


 * Thanks! That's most likely the answer. Your answer helped me to do a more focused search, which led me to the Gigabyte G241-G40 rack mount server, which uses a MD71-HB1 motherboard. [ https://www.gigabyte.com/GPU-Server/G241-G40-rev-100 ] The manual [ https://download.gigabyte.com/FileList/Manual/server_manual_G241-G40_e_10.pdf ] mentions a "HDD Backplane", which I think is used by the 4 SATA 3.5" hot-swappable HDD/SSD bays. Thanks for the help. --Guy Macon (talk) 22:56, 5 August 2020 (UTC)


 * Perhaps the P in BPMI stands for Power - allowing software control of relays on the backplane, to facilitate safe hotswapping. -- Finlay McWalter··–·Talk 15:55, 6 August 2020 (UTC)


 * I think you are right, something has to be added to make SATA ports hot swappable, and this looks like it is it. A final note for anyone who later finds this in the archives: the Gigabyte part number for the backplane appears to be "Back plane board_4-port: 9CBPG041NR-00". Some Gigabyte servers list an obviously related "Back plane board_2-port: 9CBP2021NR-00". --Guy Macon (talk) 20:28, 6 August 2020 (UTC)

That's a fairly common type of high density connector used for various purposes like connecting LCD displays to motherboards. They have a lot of conductors in a small space but aren't made for high numbers of cycles. See here for some similar ones. I don't know what it's being used for on that board. 2602:24A:DE47:BB20:50DE:F402:42A6:A17D (talk) 09:24, 7 August 2020 (UTC)