The answer is as follows: According to my understanding, the R9000X (possibly referring to NETGEAR's wireless router model) is a network device, while the R9000X (possibly referring to Xiaomi's mobile power product) is a charging device. The two are different types of devices, so you can't charge the R9000X wireless router directly using the R9000X Power Bank. The R9000X usually requires the use of a power adapter to power it.
Of course, as long as the power output is stable and the power meets the requirements of the equipment, it can be used