Chip :QCA1023-0/QCA9377-3 Interface : SDIO3.0/Uart 1T1R Radio : BT5.0/ BLE5.0 5G Wi-Fi Size : 12.0 X 12.0mm Certification : CE, FCC, IC, SRRC, RCM, KCC, TELEC

Chip :RTL8723DS 1T1R Interface : SDIO2.0 / UART 1T1R Radio : 2.4G Wi-Fi BT4.2 Size : 12.0 X 12.0mm Certification : CE ,FCC, IC, TELEC, KCC, BQB, SRRC

Chip : RTL8821CU 1T1R Interface : USB2.0 Radio : Bluetooth 5.0, WIFI 802.11 a/b/g/n/ac Size : L18 x W20 x H3.05 mm Certification : WPC, CE

Chip : RTL8188FTV 1T1R Interface : USB2.0 Radio : 2.4G WiFi Size : 14.8x18.2mm Certification : CE, FCC, IC, RRC, NCC, KCC, WPC, ENACOM, FAC, RCM, TELEC

Chip : RTL8723DU 1T1R Interface : USB2.0 Radio : Bluetooth 4.2, 2.4G WiFi Size : 12.2mm × 12.9 mm × 1.8mm

Chip : RTL8821 1T1R Interface : SDIO, UART Radio : Bluetooth 5.3, WiFi 802.11 a/b/g/n/ac Size : 17 × 17 × 2.4mm