Hi Vequestor
From their site:
Logitech no longer ships manuals with our products. Instead, each product comes with a Setup Guide or a Getting Started guide along with an extensive Help file you can access through the software. The Setup/Getting Started guides are simply designed to tell you how to connect the product. Once you have installed the software, open the software and press F1 to view the Help system for more information on using the product.
For some products, the guides are available on the download page for your product. If there is not a guide for your product, click the Ask a Question link above to send your question to our Customer Support staff.
ALSO, that Alesis sure looks like the same thing with a different name to me.