Digi Connector Xr 920, Xe, ClassicBoard & PC/X Connector Options 4 Port
Digi International is the world's leading supplier of multi-function adapters
for server-based communications systems. Digi's products, including its DataFire
digital adapters and AccelePort multi-port serial adapters, are an integral part
of server-based communications systems for remote access, fax, routing, computer
telephony and Internet points of presence. Digi International also offers
various cabling solutions.
For more information: http://digi.com/products/multiport%20serial%20cards/dox/apxr.pdf