Adesso ACK-540U Leaflet

ADESSO provides a limited warranty 
against defects in materials and 

workmanship for a period of ONE 

YEAR from the date of original retail 

purchase. 

If you discover a defect, Adesso will, 

at its option, repair or replace the 

product at no charge to you, provided 

you return it during the warranty 

period with transportation charges 
pre-paid to Adesso.  You must contact 

Adesso at 

Return Merchandise Authorization 

number (RMA) prior to returning any 

product.  For each product returned 

for warranty service, please include 
your name, shipping address (no P.O. 

Box), telephone number, copy of the 

bill of sale as proof of purchase and 

have the package clearly marked with 

your RMA number.

 

This warranty does not apply if the 

product has been damaged by 

accident, abuse, misuse or improper 

freight handling.   The warranty will 

not cover products that have been 
modified without the written 

permission of Adesso, or if the serial 

number has been removed or defaced.

 

 

Long-term repetitive use of any keyboard 

could cause injury to user.  Adesso 

recommends users avoid excessive use of 

this or any keyboard. 

We have listed most of our 

FAQ’s (Frequently Asked Questions) at: 

 

Please visit our FAQ Service & Support 
pages before you contact our E-mail or 

Telephone Support. 

 

 

If our FAQ’s do not help you resolve your 

issues, please email 

  

 

Toll Free: (800) 467-1195 
9:00AM to 6:00PM PST Monday - Friday. 

 
Adesso is a trademark of Adesso Inc.  All other 
trademarks and trade names are property of 
their respective holders.