Serial console support only text mode. So can freasing after server change mode to graphics.
For manage server You can read:
Lights Out Management (LOM)
The Intel Server Management (ISM) software is a set of applications and agents for monitoring and managing servers. The agents can act as low-level stand-alone pieces, or can be used in conjunction with full-featured integrated management suites.
Available features include power on, power off and reset. System Event Logs (SELs) and Sensor Data Records (SDRs) can be viewed remotely.
IMHO: It's very old server and remote control of it not user frendly.