Thanks. I googled and couldn’t find anything about a power button. I didn’t know if my google-fu was weak, or if I’m just old.
Shortly after posting, the battery in the wireless mouse died. I went back to my old cubicle and got the wired keyboard and mouse. The wireless ones didn’t ‘feel right’ anyway. (I did turn off the mouse before I left the office, which I’m only in twice a week.)
I have a wireless mouse for my MacBook, but it’s rechargeable and can be used while it’s charging.