This is a high speed USB UART and a genuine item should easily attain 460800 baud in Linux or even higher.

Transmit is labelled RXD and receive as TXD on this module.

The device appears to be a genuine cp2102.

This module appears to use a fake cp2102 device and rather than the on-chip VREG being 3V3 these boards output 4.3V or 4.4V on their output pins. This module is totally unreliable at 460800 baud.

KERNEL=="ttyUSB*",\
    ATTRS{idVendor}=="10c4",\
    ATTRS{idProduct}=="ea60",\
    ATTRS{serial}=="0001",\
    GROUP="dialout",\
    MODE="0660",\
    RUN+="/bin/ln -sf %k /dev/ttyCP2102"

/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0

udev by-id is not supported by Pickle Microchip PIC ICSP.

Separate data I/O connections (only supported option)

BAITE Cp2102 module               PICMicro
===================               ========

3V3-------------------------------VDD

GND-------------------------------VSS

TX (RXD)--------------------------VPP

RTS-------------------------------PGC

DTR-----------1000R----------+----PGD
                             |
CTS--------------------------+

DEVICE=TTY
IFACE=/dev/ttyUSB0
SLEEP=0
BITRULES=0x001F

Data-sheet