For a list of all currently documented Ralink chipsets with specifications, see Ralink.
For a list of all currently documented Texas Instruments (TI) chipsets with specifications, see Texas Instruments.
SerComm would seem to be the manufacturer of this device.
Probable SSID format of ARRIS-XXXX, encryption AES (WPA2-PSK).
The switch appears (and is assumed to be) a 10/100/1000 Broadcom chip. The Ralink chip is not identifiable from the FCC photos, but the test report notes it as a RT3352.