The ServerList
In the System16 Info Block, there is the entry 'ServerList Address' at offset 124, that points to this block. It's a chained structure with information on all Servers that are currently loaded into memory and have been successfully initialized. Each entry is 64bytes long.

Ofs Size Description
0 8 ModID that handles this server's requests
8 16 ServerType, example 'VideoCard',0 or 'Nic',0 etc.
24 ... Reserved

This table can be displayed by using the 'serverlist' command from the command-prompt.