The Keychron M5 is an innovative vertical gaming mouse that caters to users seeking ergonomic comfort without sacrificing performance. Weighing around 95 grams, it stands out with its PixArt 3950 sensor, which supports a maximum polling rate of 8,000 Hz and a resolution of up to 30,000 DPI. The design includes two thumb buttons and a second scroll wheel, providing enhanced functionality for both gaming and productivity tasks. Users can customize settings through the Keychron Launcher, a web application that requires no local installation. However, the mouse lacks premium build quality, feeling somewhat basic, and the absence of RGB lighting could be a drawback for those who value aesthetics. Additionally, there is no LED indicator for profile selection, which can be inconvenient. Despite these shortcomings, the M5 performs well in various settings, making it a solid choice for users transitioning to vertical mice.