Schematics

Vcc
1
USBDM
2
USBDP
3
Ground
4
5 6
PL1
USB-B CON
C1
1uF
C2
1uF
C3
22pF
C4
22pF
Vdd
1
D-/PGC
18
D+/PGD
19
Vss
20
Osc1
2
Osc2
3
Vusb
17
RA3/Mclr
4
RC5/CCP1
5
RC4
6
RC3/AN7
7
RC6/AN8
8
RC7/AN9/SDO
9
RB7/Tx
10
RB6/SCK/SCL
11
RB5/AN11/Rx
12
RB4/AN10/SDI/SDA
13
RC2/AN6
14
RC1/AN5
15
RC0/AN4
16
IC1
P18F14K50
1
2
3
4
5
PL2
MOLEX5
1
2
3
4
5
6
7
8
PL3
MOLEX8
1
2
3
4
5
6
7
8
PL4
MOLEX8
R1
4k7
R2
4k7
21
L1
LEDred
21
L2
LEDgrn
R3
1k
R4
1k
13
2
U1
12MHz
R5
47k
1
8 9
16
USB CABLE
Top
USB-GPIO12 Schematic, (C) Devantech Ltd, 2010.