suport RDP 5.0
new feature
-a
Sets the colour depth for the connection (8, 15, 16 or 24).
More than 8 bpp are only supported when connecting to Windows XP
(up to 16 bpp) or newer. Note that the colour depth may also be
limited by the server configuration.
-r
Enable redirection of the specified device on the client, such
that it appears on the server. The only device currently sup-
ported is "sound" (requires Windows XP or newer). Note that the
allowed redirections may be restricted by the server configura-
tion.
-0 Attach to the console of the server (requires Windows Server
2003 or newer).
-4 Use RDP version 4.
-5 Use RDP version 5 (default).