TP-Link TL-PA201 Ethernet Over Power Kit Review
Ping Tests
Pinging is the act of testing the latency between two devices on a network. The smaller the value (in milliseconds), the better the connection. A low ping is vital for applications such as gaming and VOIP. Here we tested the ping between the PC and local router, and the ping between the PC and a server in Auckland NZ. For reference, the PC is situated in Sydney.
PC -> Router via Wireless 802.11g
The good thing about the wireless connection is its 1ms ping. Unfortunately, this was offset by random 2000ms pings and the odd time-out. For applications where reliability is crucial, this is not ideal.
PC -> Router via EoP
The EoP kit tends to hover around 3 - 4ms ping. A lower ping would have been nice, but it more than makes up for this by providing a very reliable connection. No time-outs or random lag spikes are a good start.
Wireless Connection
Host: AusFi Networks
Host: NZ DSL Auckland
EoP Connection
Host: AusFi Networks
Host: NZ DSL Auckland
It's clear that the EoP kit outshines the wireless alternative. The EoP units achieved an 'A' rating in all tests. The wireless connection appeared to sway between 'A' and 'C' which is far from ideal. It was also interesting to see that the ping was generally better when using the EoP kit, particularly when it comes to jitter. For those who aren't familiar with the jargon, 'jitter' is the latency difference between consecutive pings.
Perhaps the most encouraging result was the 0% packet loss, opposed to the wireless connection which lost up to 3% of packets sent. Losing packets of data means time wasted while requesting them to be sent again.
November 19th, 2009 - 19:07
How much did you pay for it? Very good. A question though, can this be used in any house?
November 19th, 2009 - 20:17
I paid $147. It can be used in pretty much any house, even across different phases.
November 19th, 2009 - 20:28
phases?
November 19th, 2009 - 21:07
http://science.howstuffworks.com/power3.htm
November 19th, 2009 - 21:49
Great write up on the TP Link kit and EoP in general.
November 21st, 2009 - 13:36
I was doing work experience in Harvey Norman over the past week and I saw one EoP lol. only 1 :(
November 21st, 2009 - 13:39
Harvey Norman aren’t exactly known to stock decent computing gear. And they’re expensive! :)
November 21st, 2009 - 20:05
Well they’re expensive until you bargin with them. Though they have an awesome wii bundle at the moment. It’s below cost :) So they will try to sell warranties and such with it :)
November 21st, 2009 - 21:52
The Wii is overpriced to start with. :P
I guess they have their own little niche, so they can charge whatever they want.
November 29th, 2009 - 10:06
Its not explained as a feature in the manuals but I found that if plugging the adaptor directly into a power point is a problem because of its size, you can remove the power connection….its modular, as its designed to be interchanged with UK and US plugs.
Just press the plastic catch below the plug and then slide the two prong attachment upwards (toward the top of the adaptor). Once removed, you will see a standard 2 pin power connection.
You can use a standard 2 prong power cable to plug into the adaptor, giving you the freedom to use it on double power points without obstruction.
Some people might suggest that this will degrade performance because of the added cable, but if you think that adding another 1 meter or so to the total cable length of maybe 10 – 50 metres of cable that is contained in your house’s wiring then I think you are kidding yourself.
November 29th, 2009 - 11:14
Nice tip! Cheers. :)
December 1st, 2009 - 12:32
has anyone had problems with recently purchased PA 201′s not working with earlier PA 201′s?
I’ve just purchased a third pa201 to add to the pair of adaptors purchased 3 months ago.
The new adaptor is suffering random dropouts. The configuration utility frequently doesn’t see the new adaptor and at times I’ve have to leave the unit unplugged for an hour or more before being able to successfully use it.
I returned the first adaptor to the retailer for an exchange. Got another new one in a sealed box but it behaves exactly the same way.
What I have discovered from the diagnostic log is that the new adaptor has a much later firmware revision than my original two adaptors.
The original adaptors are dated firmware: 20070816-FINAL-BL-C
The new adaptor has firmware dated: 20090501-FINAL-C
I’ve also noticed that the Ethernet light on the new adaptor is RED and the original adaptors its RED.
It looks as though the adaptors have gone through some recent updates and don’t play well with the older revisions.
Any care to offer some input or experience with this problem?
December 1st, 2009 - 12:38
Interesting. Unfortunately I don’t think there’s a way to update the firmware. Have you tried contacting TP-Link for assistance?
December 1st, 2009 - 13:20
Spoken with TP Link support. They don’t have an answer to the probem and indicated that they have not had any similar problems reported.
They claim they will look into the issue and give me a response at some point in the future. In the mean time, I can’t use this adaptor. The retailer is not going to keep changing adaptors and I’m concerned that if I want to buy more adaptors in future to expand my network that I’m going to have compatibility issues.
Just to be clear. I’ve tried all possible fault finding, including swapping the PA201′s between electrical outlets where they have been working perfectly however, the problem always follows the new adpator every time.
Maybe I’ve just been unlucky enough to get a couple of dud adpators.
Tech support claimed that they don’t have any firware updates available for the PA201′s at the point in time.