Tab at front left lower-part corner of t41?

[halfcard]

what is this? it looks like a little black metal tab, and on it is a graphic that looks kind of like this:

[) """""""

also it is a little crooked as it sits, as if bent or something. is that normal?

thanks

[JHEM]

IR port, should sit square in the opening.

Regards,

James

[halfcard]

thanks!