Cgminer does not use com ports so is only limited by how many USB devices your hub and operating system will support. Usually the maximum number of devices is 127, though there are various operating system workarounds that allow you to go past this.
does that include the limit of 24 usb devices on the raspberry pi. i think 24 on the pi is the maximum
yeah i get 24 on raspberry pi as well...it is a real shame
I was wondering how many rockminer r-box miners can I connect to a raspberry pi. I noticed that eyeboot.com has a 49 port usb hub, can i hook up 49 rockminers.
Windows can easily support 49 miners if you use the Eyeboot.com hub. Eyeboot have a special offer on the 49 port hub at the moment that ends in September so i suggest you buy now.