Thursday, August 26th 2010
Cooler Master Intros USNA95 Notebook and Consumer Electronics Power Supply
Cooler Master released the USNA95, which stands for universal slim notebook adapter 95W. This is a compact notebook power brick that comes with a wide range of compatibility to most notebooks in the market, packing 9 manufacturer-specific DC connectors. The unit measures 104 x 62 x 17 mm. Apart from running/charging notebooks, USNA95 can also power USB-charged devices such as PMPs, mobile phones, and Sony PSP. Functionality aside, the USNA95 bagged this year's iF product design award. Backed by a 3-year warranty, Cooler Master's USNA95 will be available soon for around 65 EUR.
12 Comments on Cooler Master Intros USNA95 Notebook and Consumer Electronics Power Supply
For the same kind of price you could get a better FSP one.
i think that with some knowledge here anyone can see that this is not too good at EMI emissions as it fails to have a grounded plug, an absolute must have for me when it comes to high switching power supplys
And yes i know that theres a trick to "create" ground but that doesn't help with emi.
you can safely say that it rectifies the AC and charges a capacitor in its primary part and then uses stepdown regulators with high efficency to create the desired voltage in secondary and even with good input filtering none of that can lower their radiation while switching.(magnet and electric field around).
there is enought space for those "special" 3 plug style laptop cables thus it is more a design fail to go with the current 2 plug only.
i would like to see this in an aluminium case which radiates heat better and with some groundplug it would be versatile as hell...
OT:
Electromagnetic interference or EMI is an electrical disturbance (interference or noise) in a system due to natural phenomena, low-frequency waves from electromechanical devices or high-frequency waves from ICs and other electronic devices.
@Asrock: None of these should have a transformer, todays copper price, performance and weight would be no good. You might confuse it with their little transformers used to filter the ac input which are used more as a coil than a transfomer and size doesn't matter there it is more a way of design and experience as it way complicated.
Who the hell gives design awards to power bricks anyway if anyone should get one it should be apple with there awesome MagSafe connections at least there's some innovation there, i don't like apple but i cant deny some of there designs are quite good.
It does what it says and well, not much to go wrong with a power adapter from a well known company like Cooler Master.
Well, I guess it won't power my laptop.