I have a device which needs to connect to one of three devices using ethernet. When one device is connected, the other 2 will be powered down. Power consumption is a factor, so I'd like to use a passive component

Using a RJ45 splitter has failed, I was wondering if anyone has a suggestion for this architecture

Would a single ethernet cable with 4 end terminations work? Is there anything off the shelf for this situation?

Best regards

  • \$\begingroup\$ I assume 10Base2 Ethernet with it's passive BNC T-pieces is out of the question :-) \$\endgroup\$ – RedGrittyBrick Jun 13 '13 at 14:44
  • \$\begingroup\$ max data we are going to be pushing is ~2MBps the only problem is the devices terminate with RJ45 \$\endgroup\$ – John Jun 13 '13 at 17:05

The two problems is that while the devices might be turned off, there is still standby power. The ethernet cards can still be active at the base level. Which is why Wake On Lan works.

You could try a 4 pole, 3 position switch. This is the same type of switch used in radios, or more computer oriented, vga switches. Quality isn't always the best. enter image description here

enter image description here

The better question is why is power consumption an issue? Can't you tap into the power from one of the devices?


protected by clabacchio Jun 14 '13 at 11:50

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

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