It’s a two-antenna design (2T2R) with around 88 Mbps of routing throughput and 10/100 switch.
In open-air testing, best-case wireless throughput with out-of-the-box settings (20 MHz channel mode) is around 60 Mbps, but with uplink running about 60% lower. Changing to 40 MHz channel mode doesn’t improve maximum throughput, but evens out up and downlink speeds.