4 yrs ago, I bought a couple kvm consoles from ATEN and they are still rocking. Other brands stopped working after 6 months or less. So I bought 9 more units this model and here are what I found. They are not as good as the initial two units I bought. the two older ATEN kvm consoles were different model than these. 1. mouse was too slow in respond 2. the rail metal pieces are high that they touch the both wrists. it makes uncomfortable in typing. 3. the space bar is too small/short. other than these 3 issues, everything else work as expected. Oh! I also had one DOA but Overstock took care of that quickly. Very nice service from Overstock.com Very quick in getting a replacement. If I find anymore issues, I will come back and edit this entry.