LGR Blerbs | Axonix 4XR CD-ROM: Powered by PS/2 (and frustration) @LGRBlerbs | Uploaded July 2021 | Updated October 2024, 1 day ago.
Testing this intriguing Type II PC Card CD-ROM by Axonix from the mid 90s. No batteries or power supply required, it's an external PCMCIA optical drive powered entirely by the ports of a Windows 95 laptop! In theory at least, heh.

Here's an archive of the v4.7 DOS and Windows 3.1 driver disk:
archive.org/details/axonix-promedia-xr-dos3x-install