This is a twin/duplex cable of varying length with 100/140 um "multimode"
cores and SMA-906 connectors. SMA-906 connectors have the stepped
center-pin, compared to the SMA-905 which is a simpler straight pin. It's
used, for example, by the LAN Bridge 100.
For additional information see pages 169 through 335 (of 452) in
Probably it has an orange sheath so it would be somewhat distinctive in your
tangled pile of cables :-}.
Thank you for looking,