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HP t620: Mods 


 


 

 



In December 2019 I heard from Jerzol from Poland who had added a SATA drive to his t620.


Adding a SATA drive

With the later production versions of the t620 the mSATA socket is missing from the motherboard leaving the M.2 socket as the only way of providing mass storage. However the pads for the mSATA socket are still there on the motherboard and Jerzol's approach is to wire a SATA lead directly to them.

mSATA pads on HP t620 The photo shows the mSATA socket solder pads on the t620 motherboard. As always with SATA connectors, if left off the board, the series capacitors in the data lines are also omitted.

Highlighted are the places where the four 10nF surface-mount capacitors have to be added and also the pads where the SATA data cable is to be soldered.

mSATA padsSATA cable
pinsignalpinsignal
Keyway
17Reserved
19Reserved
21GND7GND
23R+6B+
25R-5B-
27GND4GND
29GND
31T-3A-
33T+2A+
35GND1GND
37Reserved


The pads on the motherboard on the left and the make-up of the SATA cable on the right.

mSATA/SATA cable in place Here are the capacitors and the cable soldered in place.

Note the cable tie securing the cable to the board thus reducing any strain on the soldered connections.

mSATA/SATA cable in place Jerzol suggests picking up the +5V supply for the SATA disk (or SSD) from a fan connector or an internal USB port. Here you can see his particular choice.

SATA drive in HP t620


Here's the completed project.

t620 BIOS listing of drives


The BIOS reporting that it can see the standard flash drive (16GB) and the added 1TB SATA drive.

 


Any comments? email me. Added December 2019