NetWorks

Our rack and network hardware. Sources and schematics are in the PrinterWorks repository (Alacrity GitHub access needed).

PDU20V	NETUPS
	Coming soon

PDU20V

A rack power distribution board. It takes 20V from one big supply and shares it out to the mini PCs and other devices in the rack, over XT90 connectors.

Connectors

• PSU side (J6, back of the board): one female AMASS XT90, for the lead from the 20V supply.
• Outputs (J1-J5, J7-J10, front): nine male AMASS XT90s, one per mini PC or device.
• Solder pads (TP1-TP4, back): two +20V and two GND 4×4mm pads, for wiring the supply or measuring.

All connectors are in parallel: every output gets the full 20V rail. There is no fuse or switch on the board.

Mounting

The ten M3 holes are not isolated: the five along one long edge are on +20V and the five along the other are on GND. Mount the board with nylon standoffs or screws, or it will short the supply against a metal rack.

Mini PCs

We use it with Dell OptiPlex 3060 Micro PCs. Fed from a shared supply instead of the Dell charger, their BIOS throttles the CPU to 800 MHz. Dell3060ForcePower restores full clocks and turbo at every boot.

We use this board in our rack to save space and power: all the mini PCs run from a single supply instead of one power brick each.