Buffalo Technology HS-DH-TGL/R5 Manuale Utente

You can map additional driveletters to shares on your TeraStation.  
From the Start menu, select Run....  Enter your TeraStation’s 
hostname (you can get it from the NAS Navigator utility) or IP address.  
Press OK.

Your TeraStation should open.  “Share” is a data folder in your 
TeraStation by default.  “Info” contains your user manuals.  If you 
have created other folders, they will be visible here too.  You can map 
drive letters to any of these folders.