Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




Professional yak shaver
1599 posts

Uber Geek

Trusted
BitSignal
Lifetime subscriber

# 68552 24-Sep-2010 13:23
Send private message

I'm trying to figure out what power adapter to buy for a cheap switch I bought off TradeMe that came with no PSU, but I'm confused.

On the back of the switch it says 5VDC/2.8A. The manufacturer's website says this switch comes with a 12VDC/1A PSU, which I believe is incorrect (or maybe there are different versions).

On Surplustronics/DSE/Jaycar, I can only find 5VDC adapters with either 1A or 4A+. What is the best option if the original PSU isn't available? 




"Roads? Where we're going, we don't need roads." - Doc Emmet Brown

Create new topic
874 posts

Ultimate Geek

Trusted

  # 384033 24-Sep-2010 13:29
Send private message

The 4Amp version should be fine. The switch if working correctly, it will draw the current it requires. Check the polarity of your dc in and the PSU as well, as you would not want to let the magic smoke escape from the switch.

By the way, silly question, but have you set eyes on a manual to confirm what voltage is normally supplied? Some switches I've seen have a secondary DC input for a local back up power supply.

cheers

Knoydart



Professional yak shaver
1599 posts

Uber Geek

Trusted
BitSignal
Lifetime subscriber

  # 384036 24-Sep-2010 13:32
Send private message

The switch is centre-positive.

It's a Netgear GS108, but the picture from http://www.netgear.com/products/business/switches/unmanaged-desktop-switches/GS108.aspx differs from what I have. Only one DC input available.




"Roads? Where we're going, we don't need roads." - Doc Emmet Brown

 
 
 
 




Professional yak shaver
1599 posts

Uber Geek

Trusted
BitSignal
Lifetime subscriber

  # 384037 24-Sep-2010 13:34
Send private message

Ah, nevermind. The link above is for the current version. I have this one:

http://kb.netgear.com/app/products/model/a_id/2439

But there's no specs sheet anywhere.




"Roads? Where we're going, we don't need roads." - Doc Emmet Brown

704 posts

Ultimate Geek

Trusted

  # 384059 24-Sep-2010 13:58
Send private message

The label on the back of the switch will no doubt be correct.
As pointed out the Amperage reflects the maximum amount that can be _drawn_ from a given power supply. If the switch is lower than the power pack, you're fine.

Its more important to ensure the plug fits and that the polarity of + and - is the same. A symbol adjacent the socket should give you this.




No signature to see here, move along...



Professional yak shaver
1599 posts

Uber Geek

Trusted
BitSignal
Lifetime subscriber

  # 384063 24-Sep-2010 14:01
Send private message

Excellent. Got 3 very similar answers (two here, one on Twitter, from my dad :D), so I'll head down to Surplustronics and get the 4A one.

Cheers for the answers!




"Roads? Where we're going, we don't need roads." - Doc Emmet Brown

Create new topic



Twitter and LinkedIn »



Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Microsoft New Zealand Partner Awards results
Posted 18-Oct-2019 10:18


Logitech introduces new Made for Google keyboard and mouse devices
Posted 16-Oct-2019 13:36


MATTR launches to accelerate decentralised identity
Posted 16-Oct-2019 10:28


Vodafone X-Squad powers up for customers
Posted 16-Oct-2019 08:15


D Link ANZ launches EXO Smart Mesh Wi Fi Routers with McAfee protection
Posted 15-Oct-2019 11:31


Major Japanese retailer partners with smart New Zealand technology IMAGR
Posted 14-Oct-2019 10:29


Ola pioneers one-time passcode feature to fight rideshare fraud
Posted 14-Oct-2019 10:24


Spark Sport new home of NZC matches from 2020
Posted 10-Oct-2019 09:59


Meet Nola, Noel Leeming's new digital employee
Posted 4-Oct-2019 08:07


Registrations for Sprout Accelerator open for 2020 season
Posted 4-Oct-2019 08:02


Teletrac Navman welcomes AI tech leader Jens Meggers as new President
Posted 4-Oct-2019 07:41


Vodafone makes voice of 4G (VoLTE) official
Posted 4-Oct-2019 07:36


2degrees Reaches Milestone of 100,000 Broadband Customers
Posted 1-Oct-2019 09:17


Nokia 1 Plus available in New Zealand from 2nd October
Posted 30-Sep-2019 17:46


Ola integrates Apple Pay as payment method in New Zealand
Posted 25-Sep-2019 09:51



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.