Announced in 2013 along with Trident 2 switches from other vendors. There are actually three members to the family. The fixed configuration 32-port all QSFP varient is not shown here. Picture of the fixed config is in the data sheet. The all-QSFP version was the first to be introduced and the modular configurations came later. The original datasheet showed only the QSFP model.
Each module has twenty-four 10 Gb/s ports and two QSFP ports. The 10 Gb/s ports can be either 10GbaseT or SFP+. And you can have that with or without MACSEC. And there is also a module with eight QSFP ports, shown in the top picture, bottom right position.