0

Inside the housing of an OCZ Agility 4 SSD I found several additional connectors on the opposite site of the SATA connectors.

What are they good for and how to connect them properly?

PCB top side PCB bottom side

Zoomed: J5 JT ROM

1

J5 looks like a UART connector and the JT_ pins are likely JTAG. UART should give you console access to manufacturing/diagnostic commands, and JTAG should allow you to the debug the code (firmware) running on the controller CPU.

As for J3, at a guess, ROM/FW allows you to switch from the firmware stored in the flash to the built-in CPU boot ROM (e.g. in case flash is corrupted and firmware can't boot properly).

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.