For a list of all currently documented MediaTek chipsets with specifications, see MediaTek.
Manuf/OEM/ODM Lite-On WN4645R
Interface: USB (non-standard connector)
Connector: non-standard connector
Form factor tags: module
WI1 chip1: MediaTek MT7603U
802.11n 2.4G 2T2R Wireless LAN USB Module
"WN4645R_V00" and "323K845020YD" is silkscreened on the board in the FCC photos.