Ethernet over Powerline (Netgear HDXB101)
I've just bought the Netgear Wall-Plugged HD Ethernet Starter Kit from Novatech (the
product page is here). For the first time since I've been using them I was bit
disappointed in Novatech's service: the website showed 8 in stock available to collect
from Reading withing 24 hours, and it stayed that way until I got the email telling
me it was available to collect, 4 working days later. I know it's only a few days
more, but it annoys me that the stock availability message was inaccurate. I'm sure
it won't stop me using them, mind you...
Anyway, the kit contains a pair of HDX101 ethernet-over-powerline adapters. The HD
part of the name is meant to tell you that they can provide enough bandwidth for streaming
high-def movies, as the adapters have a (theoretical) maximum speed of 200Mbps.
I had been finding that while I could stream standard def movies over my wifi link,
high def was impossible, and it's just not practical to route ethernet cable between
my office (where the ADSL line comes in, and the Windows Home Server sits) and the
living room, so I thought I'd give the latest generation of powerline adapters a go.
I have to say I'm impressed. Set-up is mindlessly easy: just plug them in and you're
away. High def (720p) movies are streaming flawlessly - I haven't got any 1080p movies
to try, but when I get hold of something I'll give it a go.
The control panel app included on the installation CD allows you to check the speeds
you're getting, and it's showing that I'm getting 72Mbps from my server to my laptop,
and 54Mbps in the other direction. Yes, this is a lot less than the notional 200Mbps,
but then I'm not using gigabit ethernet yet, so my maximum was always going to be
100Mbps anyway. Since gigabit switches have become so cheap these days I'll probably
pick one up and see if that makes a difference - though I'll need a new card in my
homeserver as the on-board network card is 10/100.
The control panel app also allows you to set QoS priority, even to the level of selecting
a specific port, so if you're using it mainly for streaming media you can tune it
to match. The default setting appeared to be priority for UDP, which seems fine so
far for me.
When copying a large file from a WHS share to my Vista laptop I was getting speeds
of 3MB/s reported by TeraCopy, which isn't exactly blazing, but still better than
I got over wireless. I can probably get that rate up with QoS tuning, but I'll not
bother as it will mainly be used for media streaming anyway.
So: highly recommended!

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