Contec SPI-8451-LLVA User Manual

3. Hardware Installations 

32 

SPI-8451-LLVA, SPI-8452-LLVA, SPI-8451-LVA 

This product have three USB (v2.0 compliant) pin-header connector (USB0/1: CN18, USB2/3: CN19, 
USB4/5: CN20). 

Pin No.

2

4

6

8

10

Function

VCC1

USBP1-

USBP1+

USBG

GND

Pin No.

1

3

5

7

9

Function

VCC0

USBP0-

USBP0+

USBG

N.C.

CN18/19/20

1

9

2

10

 

* Pin 9 is reverse-of the connector and empty pin of prevention. 

* Optional USB Cable: USB Connector Cable 

 

CAUTION

 

 

 

Computer systems that have an unshielded cable attached to a USB port may not meet FCC 
Classrequirements, even if no device or a low-speed USB device is attached to the cable.    Use 
shielded cable that meets the requirements for full-speed devices.

 

 

It is a 2 Pin connector used for external battery. An external battery power for used of Real-time clock 
and CMOS memory. 

Pin No.

1

2

Function

GND

External battery

 (3V)

CN21

Housing: IL-2S-S3L-(N) (JAE)

Contact: IL-C2-1-10000 (JAE)

2 1

 

SPI-8451-LLVAS / SPI-8452-LLVAS has the large capacity battery connected to this connector as standard.