VOGONS


First post, by ildonaldo

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I've just got a new cooler for my Pentium II built that I can't make heads or tales of.

It is called "Pentalpha, EISCA Cooler ", obviously it's a SECC Cooler but it comes with a strange interface/header on the front (see images below).
The cable "might" suggest a USB2 connector, but the connector on the cooler doesn't.
It also comes with two addional plastic pins that are shorter that the SECC locks and removable feet (see first image, front).

The disk, that came with the cooler did not contain any clue (or manual).
Has anyone got an idea what it is for or how it works?

TNX & regards

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Last edited by ildonaldo on 2020-02-07, 17:56. Edited 1 time in total.

Building my own PCs since 1991 - for my retro builds it's "no CF-disks, no Floppy emulators, no modern cases etc.", only the real and authentic stuff whenever possible.

Reply 1 of 8, by imi

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the feet with the pegs on the bottom are just extra mounting points that should be present on all(?) Slot 1 boards.

do both ends of the cable look the same?

Reply 2 of 8, by ildonaldo

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Yes, both ends are identical.
The only additional information I've found so far is this patent no. ...

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Building my own PCs since 1991 - for my retro builds it's "no CF-disks, no Floppy emulators, no modern cases etc.", only the real and authentic stuff whenever possible.

Reply 3 of 8, by Doornkaat

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Maybe running setup.exe will reveal what the pins are used for?

Reply 4 of 8, by PC Hoarder Patrol

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You'll need a compatable mainboard with a suitable I2C header. Here's some info based on the earlier socket 7 version

https://web.archive.org/web/20000612032342fw_ … ct/sk7EISCA.htm

Haven't looked that closely, but found one board - the Shuttle HOT-661V Apollo Pro Plus Slot 1 - with the header (try Googling EISCA mainboards)

Reply 5 of 8, by Ozzuneoj

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Interesting! I've never seen one of these before. Looks like an early version of the motherboard-controlled PWM fans we have now. Seems like overkill for processors that have static clock speeds and voltages.

Now for some blitting from the back buffer.

Reply 7 of 8, by imi

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interesting stuff ^^

Reply 8 of 8, by Doornkaat

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Just found out the Chaintech 6BTM uses this feature and page 51 of the manual gives a short description and pinout.