SceUsbDevSerial

Module
A simplified and internal development version of SceUsbSerial:
 * Does not check SceSblACMgrForDriver for processes capabilities.
 * Does not check sceIdStorageLookupForDriver(0x112, 0, /*s_data_81003184*/ "", 0x40); (might be Driver name similarly to PSP IdStorage)

This module exists only in non-secure world. The SELF can be found in.

sceUsbDevSerialGetDeviceState
Calls sceUdcdGetDeviceStateInternalForDriver(2, a2, a3, 2).