It is not a ferrite bead (FB) but it is used to comply with FCC Part B to reject IDE logic transition noise up in the 100 MHz range so that when external linear power amps have non-linear effects with RF, the demodulation interferes with the audio signal.
The datasheet has a BOM , or "bill of material" for this shown in >/AS100-L-M S100DM2.pdf file near the end, p6-12, as I showed.
It says it is an epoxy thru-hole 47 uH inductor, and L is the reference designator (REF DES) for inductor. Guess what it is for ferrite bead? It could be identified as FB# or could be L . The 1st example I found in their documents was in the ALS100 folder is shown below.
( except I could not read the .doc files made by Adobe Framemaker)
It will work with a jumper on the SMD pad, until you get some inductors.
In fact, it is the only BOM in your link of manuals with an L5, many others have L1 to L4 of 10 uH.
FB's are cheaper lossy ceramic materials with a mix of metal, magnetic and dielectric to simulate a lossy inductor with fairly low R but much looser tolerances.
Considering my background , and others here (read) and yours, why would you doubt my previous answer compared to your online search?
I too love these Win95 vintage audio synth cards. Win95 from Packard Bell had a huge suite of useful features, speakerphone, modem, VOIP, phone auto message folders, custom voice messages, MIDI music synth, and DC coupled electret mic inputs with no pop sound or DC offset instead of the cheap AC coupled types now.