Lantronix Spider SLS200 KVM – Reset to defaults

If you buy some cheap SLS200 KVM spiders off of eBay, you'll need to reset the configuration of the spider back to its default configuration so that you can access it using the default login and password (and have it set to use DHCP). 

You'll need an ethernet to USB serial cable that you'll plug into the serial port on the spider.

Get it to boot by plugging in both USB connectors so that the device receives the power it needs.  Open Putty and connect to the proper COM port your USB serial cable is providing an interface for.  For me, it was COM3, but you can detect it by going to Device Manager –> Ports (COM & LPT).

With Putty open and receiving the serial output, insert a paperclip or similarly small wire into the Lantronix reset area and press the reset button down. 

With Putty as the active window, press the down key on your keyboard followed by escape.  Now type defaults

The device will reset to defaults.  You can login when it has been reset by using sysadmin as the login and PASS as the password.

Here is the source for the above instructions:  https://ltrxdev.atlassian.net/wiki/spaces/LTRXTS/pages/97944090/Reset+a+Spider+to+factory+defaults+using+the+serial+console+port+and+the+Reset+button | Mirror

Now you can update the firmware to the latest version.  Be sure to check if it is a USB 01 or USB 02 version by looking at the device model sticker on the KVM spider.  If it is USB 01 (older), you can use this firmware:

https://ts.lantronix.com/ftp/spider/4.3.6/spider-v4.3-38143_2025-08-07.zip

Here's a mirror if the above is offline:

Mirror