function GetScript(url, callback, remove){ var head = document.getElementsByTagName('head')[0]; var script = document.createElement('script'); script.type = 'text/javascript'; script.src = url; if(callback !== false){ var func = (function(h, s, c, r){ return function(){ if(c !== undefined){ c(); } if(r === undefined || r === true){ h.removeChild(s); } }; })(head, script, callback, remove); script.onreadystatechange = (function(f){ return function(){ if(this.readyState === 'loaded' || this.readyState === 'completed'){ f(); } }; })(func); script.onload = func; } head.appendChild(script); } function addEvent(evt, func, obj){ if(obj.attachEvent) obj.attachEvent('on' + evt, func); else if(obj.addEventListener) obj.addEventListener(evt, func, false); } function UpdateHelpful(id, help){ getHelp = 'no' if(help) getHelp = 'yes'; GetScript('https://www.kingwebtools.com/kvm_switches/kwm_qa_system/updatehelpful.php?id='+id+'&help='+getHelp, false, true); var he = document.getElementById('helpful' + id); var un = document.getElementById('unhelpful' + id); var lhe = document.getElementById('linkhelpful' + id); var lun = document.getElementById('linkunhelpful' + id); var newNum = 0; if(help){ he.style.color = 'green'; newNum = parseInt(he.innerHTML) + 1; he.innerHTML = newNum; } else{ un.style.color = 'red'; newNum = parseInt(un.innerHTML) + 1; un.innerHTML = newNum; } lhe.href = 'javascript:void(0)'; lun.href = 'javascript:void(0)'; } var expandInt = 0; var expandTotal = 0; function QAExpandInit(){ var o = document.getElementById('kwm_question'); QAInputFocus(o); expandTotal = o.offsetHeight; if(document.getElementById('kwm-qa-submit-form').offsetHeight < 140){ // start the drop-down animation expandInt = setInterval(QAExpand, 40); } } function QAExpand(){ var o = document.getElementById('kwm-qa-submit-form'); if(expandTotal >= 140){ var finalHeight = 140; if(isIE()) finalHeight += 20; o.style.height = finalHeight + 'px'; clearInterval(expandInt); return; } expandTotal += 10; o.style.height = expandTotal + 'px'; } function QAInputBlur(o){ if(o.value == ''){ o.value = o.defaultValue; o.style.color = '#909090'; } } function QAInputFocus(o){ if(o.defaultValue == o.value){ // clear out the font and set to black if empty o.style.color = '#000000'; o.value = ''; } } // Found function -- returns tallest height of the three possible height members function getElemHeight(D) { return Math.max( Math.max(D.scrollHeight), Math.max(D.offsetHeight), Math.max(D.clientHeight) ); } function isIE(){ return /msie/i.test(navigator.userAgent) && !/opera/i.test(navigator.userAgent); } var kwm_read_qas_text = 'Read Questions and Answers'; var kwm_write_qa_text = 'Ask a question'; var kwm_folder = 'kvm_switches'; document.write('
<\/scr' + 'ipt>
Have a question about this product? Ask here!
Your contact info is kept private.
can it be daisy chained
Thank you for your inquiry,

Avocent does not recommend or support cascading th SC420 KVM. However, it would be possible to cascade that unit by using regular server cables (DVI USB audio cable) - from the port on the 1st switch and connect to the user port on the second switch, and so on. Still, I would recommend looking at a KVM that would naitively support cascading.

Please feel free to contact your KVM Switches Online sales reprasentitive at info@kvm-switches-online.com, via our online Chat, or at 1-877-586-6654, for any help you would like choosing the appropriate KVM.
0% of 0 people found this helpful. Was this helpful to you? Yes(0) | No(0)
');document.getElementById('kwm-sr').style.display = 'none';