A KVM is a hard product to gauge when it comes to the unit's  performance. There are no tried and true ways to benchmark a KVM. As such, any "review" of a KVM product will be nothing more than a product assessment based on one persons subjective experiences.

With that said, I will detail my experiences with this particular KVM product.  I have been using this product for about 6 weeks now.  All in all I like it.  It does however have some minor annoyances that I will detail later.  

Setup

The KVM was connected to a variety of computers over the course of the 6 weeks I have been using it. I used the four connections to run a combo of computers 1, 3, 4, & 5  at once to simulate using 4 PCs at once.  The majority of time I have been using the product, PCs 1,4, & 5 have been connected. 

1. Dell XPS-T450, GF2 Ti / Voodoo 5 5500 running at 1280x1024x32 at 75 Hz, connected via USB Win2k
2. Dell Inspiron 7000 (video only) running at 800x600x16 Windows 98se and Windows XP Pro.
3. Dell Inspiron 4100 (video only) running at 1024x768x32 Windows 2000
4. Compaq Presario 4660, 800x600x16, connected via PS/2 Windows 95
5. Homebrew AMD XP 1500+, GF4 Ti4600 / GF2 Ti, running at 1280x1024x32 at 75Hz, connected via PS/2 and USB, also tested running at 1152x864x32 at 85 Hz. Windows 2000
6. Homebrew AMD XP 2000+, GF4 Ti4600, running at 1152x864x32 at 85 Hz, Windows XP Professional.

Audio console connections (mike and speaker) were run to an Altec Lansing ACS340 speaker set and the cheap boom mike that ships with the Sound Blaster Live line of sound cards.