See a list of some products that promise to be quiet:
Product: HP LP2475w
Source: http://www.prad.de/en/monitore/review/2 ... 2475w.html
Quote: "...When in use, the monitor is absolutely silent. Regardless of what brightness settings are selected, the HP LP2475w functions noiselessly. A minimal operating noise can be heard only when you place your ear on the back of the monitor to listen. This is completely normal, since the monitor is still a complex electrical device...
Product: Logitech Illuminated Keyboard
Quotes: "...Although we were initially worried by the first of these keyboards that we tested, which had a very loud space bar, and, as you can hear in this video, noise levels are well under control. We compare it here to one of the quitest keyboards we've ever tested, a Cherry, and a classic Logitech with big deep keys... ...Pretty quiet...
Product: Microsoft Wired Keyboard 600
Source: http://www.microsoft.com/hardware/mouse ... px?pid=039
Quote: "...Quiet, responsive, thin-profile keys...
Product: SteelSeries Ikari Laser
Quote: "...One last impressive point was its silence...
Product: QPAD XT-R
Quote: "...The pad is very quiet too â€“ now this seems like a strange way to describe a mouse pad but for some harder surface pads, when the mouse is moved it can produce a really annoying grating sound. Luckily, this product is ultra-quiet (only slightly noisier than a cloth pad)...
Now, see a list of products that have been disapproved:
Product: NEC MultiSync LCD24WMGX3
Source: http://www.prad.de/en/monitore/review/2 ... wmgx3.html
Quotes: "...The noise development on the NEC 24WMGXÂ³ is at a very low level: a slight humming is all that can be heard... ...The only critical point is the noise produced by the model when it is in use, which many prove an irritation to silent PC users. The minimum brightness is also slightly too high at 116 cd/mÂ²...
Product: NEC MultiSync LCD2490WUXi
Source: http://www.prad.de/en/monitore/review/2 ... 0wuxi.html
Quotes: "...Despite the fact that no integrated fan has been included, our test model unfortunately did not remain completely silent. The power unit and/or backlight inverter make themselves noticed through a slight humming, which becomes louder when the backlight brightness is reduced... ...The negative aspects can be counted quickly: the operating noise of the model we tested can be distracting in very quiet surroundings...
Product: Microsoft SideWinder X6 Keyboard
Quote: "...The noise it makes bouncing back up after you release it is horrible...
These are the ones that I remember now.
There are others, such as BenQ mentioned in another topic like noisy and others like quiet.