Hardware & Technical [X52 Pro] Anyone knows which accessory(ies) fit these?

[FoxTwo]

I turned my X52 Pro Throttle and Stick upside down and noticed these locking-grooves at the bottom of both of them:

Spoiler

Anyone knows for which specific accessory they're for, and where I can get it/them?

 

[Shadowdancer]

I suspect those slots were for a product that Saitek never ended up making, maybe a "sim chair" or some other plastic monstrosity. I've never seen anything being advertised as using those, and any third-party manufacturer would just have used the screw holes that are readily accessible from the top.

 

[Knot2clever]

They are for the suction cups.

 

[FoxTwo]

Doh!

Thanks Knot2clever... never really hit me that those are for suction feet....