Download for DES-1210-52 Manual: How to access switch interface How to change switch’s ip address How to enable loopback detection How to enable VLAN on switch How to set LACP(Link Aggregation) How to set RSTP on switch How to upgrade switch firmware DES-1210-52 Download Firmware:2.03.001 Hardware:A1 Download Firmware:3.12.015 Hardware:B1 Download Firmware:4.10 Hardware:C1