First, let me explain my criteria. I was looking for a thin and light full functioning notebook with more power than a netbook (of which I've owned two) and less than $1000 (which was hard to find until now), with an integrated webcame (which most laptops come equipped with nowadays), and that could handle streaming video from sights like Hulu, netflix, etc. HP has gotten the combination just right. With a processor that beats the standard 1+ ghz in a netbook, a large 13.3" matte widescreen, weighing under 3.0lbs, and under a grand, the Probook 5310m is a great buy.
Pros: 2.26ghz processor
13.3" widescreen (1366x768)
2gb Ram expandable to 4gb
Extremely thin
Nice, slim, business look - eye catching
Quick access web and email buttons
Matte screen
Chicklet-layout style keyboard
Sturdy and stylish build
Average batter life - 4 hours w/ a balanced power setting (and yes, I've tested this!)
Great security software included
Cons: Runs warm (but not hot) when streaming/watching video (most laptops do however)
Fan is sometimes loud
No VGA out port (requires a displayport to VGA adapter)
I've owned the Probook 5310m for just over two weeks now and have used it everyday! Overall, this machine has done exactly what I've needed it to do. The keyboard is very comfortable to type on. The speakers are weak, but that's to be expected. I rarely use the unit speakers any way. The sound is more than sufficient through headphones or connected to my LCD TV.
I'm running Windows 7 Professional and operating multiple screens at a time is a cinch. I've also done video editing on this computer. Although not as snappy as my desktop, the Probook 5310m handled it just fine and without hickups.
The Probook 5310m does not come with an optical (dvd) drive, but thin external drives are avaiable nowadays for around $50 bucks. Since I rarely use a dvd drive I was actually looking for a system without one to keep the weight down.
So, for the money you're paying this notebook is a great package. If it fits your needs, I highly recommend it. BTW, it's great for students and frequent travelers. I did some video and document editing while traveling over the Thanksgiving holiday and found it a very easy experience.
buy this product 
