General > General Technical Chat
(Solved) Laptop Caddy connector identification. Getac, Roda and Itronix laptops
Fraser:
I have been working on the pin out diagram and will have that completed soon.
I doubt I will go much further with this particular project for a while though as I have higher priority tasks awaiting my attention. I bought the connectors now because they are already hard to source and may become even more scarce between now and when I get around to making some adapters. For info, I will likely use a cable loom rather than a PCB fir the adapter as there are only a few needed and not many connections involved.
I will post my notes on the pin out once completed.
Fraser
Fraser:
Just a quick update.....
The wiring of the PATA 44 pin connector to the KEL 50 pin connector is very straight forward.
Pins go directly to their numerical partner on the other connector ....1 to 1, 2 to 2 ....... 42 to 42, 43 to 43.
The following pins are not connected from the PATA 44 pin connector.....
20 (key)
21(DMARQ)
29(DMACK)
30(GND)
44(TYPE)
On the KEL connector there are additional pins........
41,42,43,45,46,47,48,49,50 are all connected together to +5V (Logic)
A 5.0V TVS diode is wired between pins 40 (GND) and 48 (+5V (Logic) for transient protection. It looks to be a SMBJ5.0 type.
More detail and pictures will follow in due course.
Fraser:
A couple of quick pictures of the ribbon cable that I was testing for pin out.......
I have added my pin-out working notes for information. I will write them up as soon as time permits.
Ecmbuster:
I see that you have been working at this problem. I did get the CD ROM operating with a good cleanup and a few drops of Stabilant-22 on the edge connection. It will read a CD. I am patient enough for your tests to complete and hopefully access a connection to the RODA IDE connection and wired attachment to the IDE connector of the hard drive.
Fraser:
The 100 pin connectors arrived today. They look to be an original KEL part and not a clone.
I intend to carefully cut these connectors to the required length as previously detailed. I do not intend to regularly remove the hard disk drive and a locating spigot at just one end is enough for correct pin alignment. Not a perfect solution but, as we say in England, ‘beggars cannot be choosers’. I have had to buy what is available and will adapt it to the needs of the laptops. Each 100 pin connector will be cut to make both a 50 pin and a 30 pin connector for the Roda Rocky (50 pin) and Itronix/General Dynamics (30 pin) laptops :-+
Fraser
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