How to tell differential scsi drives and cards apart

[Teo Zenios]

Is there an easy way to tell if a SCSI controller or HD is LVD or HVD? My understanding is that HVD was the first type used and was just called differential F/W and then LVD came out so the old standard was then called HVD. 

I have some SUN Symbios 22802 cards coming in I wanted to use in a SUN Ultra Sparc 5 and I think those are HVD (advertised as just differential and I didn't think to cross check). Everything I have is SE/LVD.