I am looking for a cheap serial console server.

I must be able to access it from remote locations, thus the requirement for TCP/IP and I cant put a console server in each rack so I need to be able to use Cat5e cable to connect to a serial SIP module.

I found one on ebay "HP AF101A 16 Port Serial Console Server" but I am not able to find any SIP modules for it…may be its an outdated model?

I dont have a problem using used device. Please let me know if anyone knows of any good one.