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USB extension, vs hub vs KVM, input lag?

post #1 of 7
Thread Starter 
So, i have 2 systems which i'd like to use the same keyboard/mouse for. Not being immediately next to each other, it makes it a pain to try and switch my keyboard/mouse from one to the other constantly without tangling up all my cables. I was considering buying one of the three, mechanical KVM(switching keyboard and mouse only, no video), a USB hub, or USB extensions so that the plugs are right where I need them.

In order, that is what would be the most convenient, KVM as it has a button to quickly switch, a hub as I only need to mount one cable to my desk, and lastly the extension to put the plugs where I need them.

My biggest and #1 concern would be input lag. If it comes down to it, I will take the 5 min extra every hour to switch these to that I do not incur ant lag during my gaming.

What are your guys opinions?
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post #2 of 7
Ideally, none of those solutions should introduce any lag.

Make sure that the total length of the USB cables (including extensions) is less than 5m or you might have latency issues.

I have heard horror stories of problems caused by the problems in cheap KVM switches (epically over USB), so find one with good ratings if you go down that route and your be fine.
Edited by crimsontears809739 - 9/24/12 at 9:04am
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by crimsontears809739 View Post

Ideally, none of those solutions should introduce any lag.
Make sure that the total length of the USB cables (including extensions) is less than 5m or you might have latency issues.
I have heard horror stories of problems caused by the problems in cheap KVM switches (epically over USB), so find one with good ratings if you go down that route and your be fine.

Many have had issues with the difference between a mechanical KVM which uses relays and has no lag and is cheaper, but is the KVM is not on the selected source, there will be no Keyboard/mouse detected.

An emulated KVM does the opposite, it emulates a Keyboard/mouse attached and sneds the input as an emulation, there is a lag time in these.

After research, I chose this for my specific needs.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817399032
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post #4 of 7
^__^ I learned something new.

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post #5 of 7
Quote:
Originally Posted by Cheetohz View Post

Many have had issues with the difference between a mechanical KVM which uses relays and has no lag and is cheaper, but is the KVM is not on the selected source, there will be no Keyboard/mouse detected.
An emulated KVM does the opposite, it emulates a Keyboard/mouse attached and sneds the input as an emulation, there is a lag time in these.
After research, I chose this for my specific needs.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817399032

I have that exact KVM for sale: http://www.overclock.net/t/1296239/2-port-kvm-with-switch/0_100
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post

I have that exact KVM for sale: http://www.overclock.net/t/1296239/2-port-kvm-with-switch/0_100
I wish I had found this earlier... 8-(
2500K + GTX570 DS
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Cyborg G.L.I.D.E. 7 Beyerdynamics DT990 Pro 250 ohm Asus ROG Xonar Phoebus 
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2500K + GTX570 DS
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core I5 2500k @3.3Ghz ASrock Extreme3 Gen3 EVGA GTX570 DS Gskill Sniper 1600 
Hard DriveHard DriveHard DriveHard Drive
OCZ Vertex Plus SSD Intel 520 series SSD WD Caviar Black WD Caviar Green 
Optical DriveCoolingCoolingOS
LG Blue Ray Rewriter Xigmatex 120mm fans Cooler masters Hyper 212 Plus Windows 7 x64 Ultimate 
MonitorMonitorMonitorMonitor
Asus VG278H Asus VS239H-P Asus VS239H-P Asus VS239H-P 
KeyboardPowerCaseMouse
Razer BlackWidow Ultimate Xion SUpernova 800W Corsair Carbide 400R Cyborg R.A.T. 7 Albino Edition 
Mouse PadAudioAudio
Cyborg G.L.I.D.E. 7 Beyerdynamics DT990 Pro 250 ohm Asus ROG Xonar Phoebus 
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post #7 of 7
Seems like OP already found a solution, but I'm posting this up for anyone else looking for something similar.

I recently bought 2 of these for switching input between my computer and a XIM Edge. They work really well and no input lag that I can tell.

There is also a matrix style switcher (2 inputs > 2 outputs) available on monoprice.
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