I am looking for a very hard to find 50-pin to ATAPI-JAE (Japan
Aviation Electronics) connector:

http://home.earthlink.net/%7Etuxshield/sale/nlx_cable.jpg

This cable is used to connect a slimline CD-ROM drive to a 50-pin
motherboard connector.  It has been used in Sun machines as well as PC
NLX motherboards and is nearly impossible to find.

ez76,
You are right, it IS practically impossible to find this cable. I
looked for about an hour. The closest I came was finding a CD-ROM that
uses the JAE -ATAPI connector cable, but the company doesn't have the
cable! I called SHENTECH.COM, Flushing, New York 11355, U.S.A. 
888-387-2138 (Sales), 718-661-3306 (Tech. Support).


http://www.shentech.com/litls8xdvd24.html

  Shentech SELLS the CD-ROM (Lite-On) that uses the cable you are
searching for, but NOT the cable! (Our conversation followed a Jerry
Seinfeld routine about car rental companies…. “ You know how to TAKE
the reservation, but you don’t know how to HOLD the reservation….)
I asked the rep how folks who might ORDER the the CD-ROM used it 
without the cable, but he didn’t know (Nor did he seem to care). He
had no recommendations or resources of where to locate the cable.

I will keep trying however.

perhaps u if u had a specific model number for sun. in which it was
used. it might be easier to obtain. from the sun site

if you can find specifications of the cable, you could probably solder
your own connector cable. it would involve something along the lines
of finding the end to the hard to find cable (just the plug) and
soldering some wires into it, then getting a standard ide cable,
cutting it in half, and connecting the appropriate wires on one onto
the other. good luck.