An ancient K6-2 processor with 128 MB of RAM. Not bad! The latest Debian Linux 8 (Jessie) runs fine on that sort of hardware. The problem was the old ISA network card which Debian didn't know how to handle. Me neither. Now what?
With a spare PCI bus USB-card and an A-Link wifi dongle my old PC got a new life. Both devices are compatible with Debian. USB card was recognized automatically. A-Link USB wifi dongle needed an extra non-free software package. Take a look at my earlier post to see how to make A-Link work on Linux.
USB card and A-Link USB wifi dongle
Time for old ISA network card to go