(Apologizes for the brevity of my last response - had to go grocery shopping with the girlfriend....)
The Maintenance | System version reports to be 2.05 which I believe makes it an LS2. I don't believe it's an HG though, just HD-H250LAN (checked this detail again just now - twice.)
I hasn't the cross over switch (no "X" icon), just an "init" ("reset") button on the back, two USB ports (one front, one back).
I am using this page http://buffalo.nas-central.org/index.php/Category:LS2
as my reference to which device I have and thus how to proceed.
But, no, there is no "G" in the model number and only a "(f)" in tiny letters at the very end of the bolded model number. Example: HD-H250LAN
(f) and "Made in Japan" on the fan grill.
So, LS2 or LS1 variation? I think LS2 but I'm asking...
PS Thanks for everyone responses. Feels like a community.