The internal assembly of this mouse is shockingly complex compared to other Razer models. Instead of a singular printed circuit board (PCB) housing the sensor, buttons, and everything else, the DeathAdder V4 Pro opts for three. One is at the bottom of the mouse, with the sensor, battery, and a singular micro-switch for the mouse button. A second PCB is located in the top housing, held in by a bracket, with the scroll wheel and two main micro-switches for the left and right clicks. A third PCB, held in by the same bracket, is positioned sideways with two micro-switches for the two side buttons.
Removing the bracket is fairly straightforward, but it involves bending either the housing or the bracket (both of which are made from thin, ultra-lightweight plastic) to get them apart. It’s not terribly difficult, but it could cause issues if done improperly. The main benefit of this design is that there is less space between the mouse buttons and the micro-switches. To save money or reduce the number of parts, lots of mice will instead put all of the internals onto one PCB and use small hinged linkages to connect the buttons and switches. While this can result in a simpler design, it creates more failure points and can negatively impact the feel of pressing a button.
While there is a slight risk for failure with the connections between the PCBs, it’s unlikely. All three components are static inside the mouse housing, and the two halves are connected by a ribbon cable that doesn’t experience any stress during use. While repairability and disassembly aren’t going to be easy on a complex mouse like this, none of the internals seem likely to experience random or premature failures. All of the sensors are rated for massive amounts of actuations by Razer, and none of them are connected in ways that are overly complicated. The battery looks standard and can be unplugged easily without any soldering. It is attached to the bottom of the mouse with an adhesive, and while this adhesive likely won’t survive removal, it should be fairly easy to stick a new battery to the shell.
The DeathAdder V4 Pro is a great example of everything coming together on a mouse. It has both fantastic on-paper specs and a solid build that backs it up. Beyond that, Razer Synapse allows for nearly every aspect of the mouse’s performance to be customized to the user’s specific preferences—a way to close the final gap between the device’s performance and the user’s expectations. It’s a great mouse not only for competitive gamers, but for anyone who wants to customize their mouse to their exact needs. And in the age of ultra-adjustable Hall effect keyboards, having a mouse with equal levels of adjustment seems like the natural next step.
