ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: 1 [2]  All   Go Down

Author Topic: Cisco SG300-10 Switch for Yamaha QL5 & Dante  (Read 4784 times)

Scott Holtzman

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 5448
  • Ghost AV - Avon Lake, OH
    • Ghost Audio Visual Systems, LLC
Re: Cisco SG300-10 Switch for Yamaha QL5 & Dante
« Reply #10 on: February 05, 2017, 08:17:56 am »

An active device can interrogate a passive device before the interrogated device is powered. This is a protocol that is used in electric vehicle charging for example but now we are off topic...


802.3af is the specification.  It's and IETF spec.  Being able to plug a non-powered device in without damage is a requirement.  http://www.rhyshaden.com/eth_poe.htm



Logged
Scott AKA "Skyking" Holtzman
River Delta Audio is now:

Ghost Audio Visual Solutions, LLC
Cleveland OH
www.ghostav.rocks

TomBoisseau

  • Full Member
  • ***
  • Offline Offline
  • Posts: 199
Re: Cisco SG300-10 Switch for Yamaha QL5 & Dante
« Reply #11 on: February 06, 2017, 08:39:22 pm »

Well...

I just picked up a SG300-10MPP.  You guys are right!  That's a BIG, nasty, power supply.  I understand now why so many were recommending the rack mount 20/24 port version with an internal power supply!  That probably makes sense.

Tom

Logged
Pages: 1 [2]  All   Go Up
 


Page created in 0.029 seconds with 24 queries.