For the computer technician a KVM
(Keyboard, Video, Mouse) switch is an invaluable tool as it allows one to use
multiple computers with just one keyboard, mouse and monitor.
Since I'm the go-to guy whenever there's a busted computer among
my circle of friends/family I often have three or four machines
sitting in a queue just waiting to be looked at. With a KVM I can greatly increase my efficiency, after all what else can
I do if I'm reinstalling on one machine and only have one keyboard, mouse and
monitor?v With a KVM, I can do a complete system reinstall one machine, monitor
stability testing software on another and perhaps configure a system which is about to be
Justcom manufactures many
different switches to suite your needs. Today we're going to be looking at their
JC-M104U 4-Port USB KVM Switch. For good measure Justcom also include two four
foot and two six foot multimedia (audio, USB and video) cables! Integrating the
USB keyboard/mouse, video and audio into one cable certainly makes cable
management a lot easier. The JC-M104U also comes with DC 9V 1000mA
One's first impression of the JC-M104U is that it's high quality. Unlike the JC104P,
the JC-M104U is housed in steel with a clean plastic bezel front. Setting
up the USB-centered KVM is extremely simple, and you won't have to refer to the
manual during installation.
The JC-M104U can support up to four computers at once and the KVM can even
support resolutions as high as 2048x1536 @ 85 Hz! It's nice to see that you
won't be limited to a low resolution or refresh rate due to the KVM. During
testing the JC-M104U's picture quality was excellent and if you didn't know you
were using a KVM you'd think the monitor was hooked up directly to the PC.
While JustCom labels the front USB ports as keyboard and mouse, it really doesn't
matter which ports you connect them to. Owers of optical mice will be happy to hear
that the JustCom JC-M104U provides enough power for those laser mice we all
love. The KVM even offers two additional USB ports on the back! While there are
mic and speaker jacks on the back of the KVM, unless you have a two speaker setup
you're probably not going to take advantage of the speaker options.