The emachines E510 (also known as eME510)  is a low cost notebook specially designed for the European market. It's also possible to find some stores saying that this is an Acer notebook because of the "relationship" between both companies. In January 2004, emachines was acquired by Gateway and after, in October 2007, Gateway was acquired by Acer.
Specifications:

• Operating System: Windows Vista Family Edition
• Processor: Intel Celeron T1400 @ 1.73GHz (dual core)
• Memory: 2GB DDR2 533MHz
  
• Monitor WXGA 15.4" with 1280x800 pixels
• Intel graphic card GMA X3100
• NetLink BCM5787M Gigabit Ethernet PCI Express
• AR242x 802.11abg Wireless PCI Express Adapter
  
• DVD+-RW recorder
• Microphone
• Battery with 6 cells
  
• 2.80 kg

In front of it, it's possible to see the microphone and headphone jacks. The microphone is has the default color used in this kind of jacks, but the headphone is only black, without identification.
It's also possible to see 2 led's, one to indicate when the notebook is on and another if it is recharging (orange) or full (green).
In the left side, there are 2 USB, the ethernet, the VGA connector and the Kensigton notebook lock. There is a small air output there, but it is normally cold.
In the right, there is only 1 USB and the DVD recorder.
In the rear, there is the energy plug and the main air output. This one can be a little bit warm when running heavy programs.
When openning it, it's possible to see the on button and the wireless button, a little bit on the left.
The LCD can reflect some light, as in the image with the main button. But it's nothing that can bother you.
As I'm a Linux user, the first thing I've done was to install the OpenSuse 11.0. I've got some problems related to the wireless card and the sound card, but everything work fine, without problems.
This notebook is not recommended to people that want to run games and other heavy softwares and I agree that it is not really recommended to Windows Vista, because after installing Comodo Firewall and Avast, the system started to be a little bit slower, even after disabling all desktop effects from Vista.
But when running OpenSUSE with KDE4 and all desktop effects, the system is fast and can run everythin without problems.

Now, I'm running BOINC, with 100% of cpu usage, skype, ktorrent, firefox, YaST2 and the system response is really normal. But I've tried to run a Matroska video with 1080 pixels of resolution and it was impossible to watch it in both operating systems: Windows Vista and OpenSUSE 11.0.