From Newsgroup: comp.sys.ibm.ps2.hardware

https://www.ebay.com/itm/276738912836

No idea what's in the manila envelopes, but the "foot" is plainly visible.

Folks, if you have a 77, this is the stand mor vertical mounting it.

I don't care enough to czech if the 40/57 can also use this, but I'm
fairly confident that they do...
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