Does he already have a good mouse? If not get him this

Yeah I found my mouses were stuttering a lot, and felt like it was inconsistent.

The Logitech was really solid, and felt more reliable. I don't know how mouses work, so maybe it's the quality of the sensor? That was my guess, but I'm enjoying it a lot more now.

Here's the mouse I purchased, if you're interested. It's a bit smaller, so if you like big mouses the 502 may be a better option.

Yeah and to update the firmware on the xim.

Keyboard: https://www.amazon.com/dp/B00LSGKEC4/ref=cm_sw_r_cp_api_i_ZS0nEbYMH3XG4

Mouse: Logitech G203 Prodigy RGB Wired Gaming Mouse - Black https://www.amazon.com/dp/B01M26YUKO/ref=cm_sw_r_cp_api_i_AT0nEb85XJ175