If you have an ML350e Gen8 you can get the essentials license which does support remote console and lists for $129
HP Integrated Lights-Out Essentials including 1yr 24x7 Tech Support and Updates E-LTU
http://h30094.www3.hp.com/product/sku/10474663/mfg_partno/BD775AAE
If your system is an ML350p Gen8 then you need and advance iLO license which lists for $399
HP iLO Advanced including 1yr 24x7 Technical Support and Updates Single Server License