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Bill of Materials
- Superglue x 1:
Description
This is a mount for the HW-398 Power Delivery Decoy/Trigger Board for the Fujitsu Futro S720/S920.
I got my hands on some of the Futro S720s without PSUs, so I was looking for an alternative way to get them powered. I found the Decoy Boards cheap on AliExpress (don't forget to set them from 12V to 20V!) and was looking for a way to put them in the Chassis of the Thin Client without cutting something of the metal out. Initially, I designed a “mount” that fits in the cutout for the second serial port that's missing on the S720 but later found out that the serial port is present in the S920. After looking at some pictures Online, it seems that both the S920 and the S720 aren't using the cutout for the second Ethernet-Port (not the PoE-Extension-Board one, but the cutout next to the first normal Ethernet-Port), so I made a new mount for that spot.
The HW-398 Decoy Board snugly fits in its place, I used some super glue to hold it in place. As I mentioned, don't forget to remove the bridge on the 12V pad and connect the 20V pad. I soldered on the wires to the Decoy Board before gluing it in place. You can now put the Decoy Board in its mount in the cutout of the chassis, I put it upside down so it fits the cutout more. Once again I glued the mount to the case with some superglue.
The last step is to solder the wires to the corresponding points on the mainboard. I measured some points with my multimeter, next to the DC power socket are some pads that have a direct connection to the barrel connector socket, I marked them on a picture. I connected the +20V wire to the marked point but used some other ground point because the cable I used was rather short.
I tested this on two S720s so far, and everything seems to work fine.










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