• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 242
  • Last Modified:


My computer only has 1 external com port and despite the arrival of USB ports, I need far more than one. I currentlly need one for:
Nikon camera
American Express Blue Reader

What options are available for expanding this port & / or using USB instead.
  • 3
1 Solution
Lee W, MVPTechnology and Business Process AdvisorCommented:
As I see it, you have two options:
1) buy an I/O card with 2 serial ports (about $15) check out I/O cards under this link: http://www.jdr.com/interact/categories.asp?cat=I/O+Cards/Drive+Controllers
2) buy a USB to serial converter (about $60) http://www.jdr.com/interact/item.asp?itemno=USB-SER

But I wouldn't actually buy from this company - they tend to charge 25-100% more than others.
Could you use a simple switchbox ?. I used one for simple serial communication and it had 4 out-lines and 1 in-line. I don't the requirements of the devices you want to communicate with, so i can't say if it will work.
Lee W, MVPTechnology and Business Process AdvisorCommented:
good point tonny, make that 3 options.
benwilkinsonAuthor Commented:
Thanks for all the suggestions. Do you know where I might actually be able to buy this stuff ( w/o the 25-100% premium)


Lee W, MVPTechnology and Business Process AdvisorCommented:
Look around - PLENTY of mail order vendors (Computer Shopper, you're local computer store, try NECX.com)
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Will You Be GDPR Compliant by 5/28/2018?

GDPR? That's a regulation for the European Union. But, if you collect data from customers or employees within the EU, then you need to know about GDPR and make sure your organization is compliant by May 2018. Check out our preparation checklist to make sure you're on track today!

  • 3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now