USB 2.0 Video Card VGA Adapter (Add a second monitor without a Dual Head Card) - £26.50 delivered - HotUKDeals
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- Instantly extends your screen real estate without opening up your PC
- Double the usual work space you've got by adding another display
- Tri-modes: 1. Primary Display Mode, 2. Extended Display Mode (Multi-Screen), 3. Mirror (Clones Primary Screen)
- Supports resolutions of up to 1280 x 1024, 16-bit Color
- Plug and Plug and Hot-Swappable
- Drivers (included) support Windows 2000 / XP / Vista
- Full speed USB 2.0 Interface
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siliconbits Avatar
8y, 8m agoFound 8 years, 8 months ago
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#2
http://www.dealextreme.com/productimages/sku_4838_1.jpg
linkpic...
#3
“Supports resolutions of up to 1280 x 1024, 16-bit Color”

That’s a serious limitation considering that 1440x900 is becoming the standard resolution for budget monitors these days. 16 bit colour is very poor also.

Might be worth considering for a laptop but I wouldn’t buy one of these for a desktop at any price.
#4
Yeah that is a bit of a limitation, but if you have a older style 19" as long as you dont mind the lack of viewable colour, its good
#5
dylanlewis2000
Yeah that is a bit of a limitation, but if you have a older style 19" as long as you dont mind the lack of viewable colour, its good

If you’ve got an old Black and White TV license this will hit the spot nicely. :-D
#6
Great Deal
#7
Agharta;1733417
“Supports resolutions of up to 1280 x 1024, 16-bit Color”

That’s a serious limitation considering that 1440x900 is becoming the standard resolution for budget monitors these days. 16 bit colour is very poor also.

Might be worth considering for a laptop but I wouldn’t buy one of these for a desktop at any price.


1440x900 is standard on 19-inch monitors and more... Most 17-inch LCD monitors come as 1280x1024 (see http://www.ebuyer.com/cat/Monitors/subcat/17%22-LCD-Monitors).
Oh and before I forget... 1024x1280 > 1440x900...
Also when you use business apps, 16-bit colour is not a big deal.
Every pixel count ;-)
#8
siliconbits
1440x900 is standard on 19-inch monitors and more... Most 17-inch LCD monitors come as 1280x1024

Sure; I’m considering 19” widescreen as entry level these days but of course there are cheaper screens that use 1280x1024.

siliconbits
Oh and before I forget... 1024x1280 > 1440x900...

At least you didn’t forget, unlike me. :w00t:
Did you double check that it actually supports 1440x900? i.e does the driver support this resolution.
#9
Not sure why anyone with any sense would use this on a PC. A old PCI or AGP card at £2 or so would do the job.

However on a laptop used for presentation purposes this device could turn out to be quite brilliant.
#10
Agharta
“Supports resolutions of up to 1280 x 1024, 16-bit Color”

That’s a serious limitation considering that 1440x900 is becoming the standard resolution for budget monitors these days. 16 bit colour is very poor also.


EDIT: The following is mostly just a guess, the numbers are right but it might not be being done this way:

1280x1024 is 1,300,000 pixels. And 16 bit colour is 16 bits per pixel.

That's 20 800 000 bits.

But that's for one frame, an LCD displays 60 frames per second, so lets multiply that by 60.

1 248 000 000, or 1.25Gigabits per second. Oh dear, USB2 has a maximum speed of 0.48Gbps. I guess they're using compressing at each end (your CPU and the device) or it's got a further limitation of only being able to send 20ish frames per second.

Bottom line: I wouldn't expect much more from other USB monitor 'adaptors' until USB3.0 comes out. If you need support for more than 19" then get a dual-head/PCI Card or a laptop with a built in dual-link DVI port.

p.s. 1440x900 has slightly less pixels than 1280x1024 so there's no reason why it couldn't be supported, although I've no idea if this particular device does.
#11
LadyEleanor;1735221
Not sure why anyone with any sense would use this on a PC. A old PCI or AGP card at £2 or so would do the job.

However on a laptop used for presentation purposes this device could turn out to be quite brilliant.



True... But then, my boss would not allow me to pull my office PC apart but would happily buy this little gadget for me.
#12
EndlessWaves;1735659
1280x1024 is 1,300,000 pixels. And 16 bit colour is 16 bits per pixel.

That's 20 800 000 bits.

But that's for one frame, an LCD displays 60 frames per second, so lets multiply that by 60.

1 248 000 000, or 1.25Gigabits per second. Oh dear, USB2 has a maximum speed of 0.48Gbps. I guess they're using compressing at each end (your CPU and the device) or it's got a further limitation of only being able to send 20ish frames per second.

Bottom line: I wouldn't expect much more from other USB monitor 'adaptors' until USB3.0 comes out. If you need support for more than 19" then get a dual-head/PCI Card or a laptop with a built in dual-link DVI port.

p.s. 1440x900 has slightly less pixels than 1280x1024 so there's no reason why it couldn't be supported, although I've no idea if this particular device does.


I guess you're wrong.... http://www.xbitlabs.com/articles/other/display/samsung-sm940ux.html
This is a USB monitor from Samsung and it was launched nearly one year ago.

Read it thoroughly
#13
siliconbits
I guess you're wrong....


That's entirely possible, I was just thinking aloud based on what little I know about this to try and find a plausable explaination as to why it was limited to 1280x1024. I had heard about the samsung USB but I thought that was 19" too? Your link isn't loading for me at the moment.

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