Fixes: - Fix the problem that after randomly and continuously reboot/restart the directly connected PCs about 24 hours, some ports of DES-6505 cannot link up anymore. - Fix the problem that Web UI cannot add tagged port to a VLAN correctly. - Fix the bad response time of “snmpwalk” MIB. - Fix the problem that system firmware version 3.50 - IP Multicast Static Route - Null Interface on CLI interface Please do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games. Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.