WSR-2533DHPL2 the same as WSR-2533DHPL?

Hey guys,
100% noob here. Was about to install OpenWRT on my Buffalo WSR-2533DHPL2 but am confused. Potentially a super basic question but better safe than sorry.
I have a WSR-2533DHPL2 but in the table of hardware it only shows WSR-2533DHPL. The only difference is the 2 at the end. I have just no idea if that is a substantial difference or not.

Is it safe to flash my WSR-2533DHPL2 with the firmware for WSR-2533DHPL?

Any advice?