Opto22 B4 and Opto22 001788L, two part numbers, or same one?

:confused:I am going to replace an Opto 22 board. One side read"opto22 B4". The other side read" Opto 22 001788L"

Both B4 and 001788L can be searched in google. What is the relation between them?

Like all other inquires, China opto 22 is unwilling to tell anything, except to have a distributor to quote us.


They are the same board.
The 001788L is Opto’s internal part number; it’s not normally used outside the factory, but some people see it and put it on the web needlessly.
The B4 web page is here: http://www.opto22.com/site/pr_details.aspx?cid=4&item=B4


I am the technical support of APT’s Guangzhou Office.
Today received your email ,immediately asked, give the quotation.
If you have any questions please call: ( 86) 020-33808210 Tel:18975500303
My e-mail: szeng@opto-tech.com.cn QQ:515540554