It's nice to see xiaomi started using Qualcomm SOC
Hope there's community support for this router
Here's some details I cut from web.
The Xiaomi Router 4Q is powered by a Qualcomm QCA9561 chip, clocked at 775MHz, coupled with 64MB of memory. This chipset ensures a stable performance and more smart devices can be connected concomitantly. Xiaomi router 4Q supports the 802.11n wireless protocol, uses three high-gain omnidirectional antennas, supports 3×3 MIMO technology, and has a maximum bandwidth of 450Mbps.