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4 pin Rino proprietary connector layout
4 pin Rino proprietary connector
at the Power supply out
Power supply series 2692, for use with 2690/2690A series Compaq laptop (Compaq LTE).

 The connector is a little different from the picture, the pin order is the same.
 

Pin
Number
Pin
Name
Description (may be empty)
1 6,8vdc   0,625Ah (only for charging, I think)
2 12vdc (?!) Not present in the power supply label (maybe not necessary).
3 5vdc  2Ah
4 GND  The metal ring around the pins is connected with GND, same as pin 4.

 

The power supply label indicates +5v and +6,8v, but I could measure even a +12v in pin 2. 

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Compaq LTE Power supply visual pinout:click to enlarge
Source(s) of this and additional information: http://www.xtremehardware.it/forum/f89/pinouts_schemi_di_connettori_cavi_e_adattatori-18355/#post209749
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