Packard Bell systems usually had Aztech sound cards, which are actually generally quite good.
I found this pic from a C115:
The FCC ID (which is usually the best identifier for Aztech cards) is visible: MMSN855
In Packard Bell-speak that's a "Rocky 2.5", the mainstay of their mid 1990s systems.
Now, I know that card well because I use it in my late DOS system next to a Gravis Ultrasound and an AWE64 Gold. Why?
+real OPL3
+bug-free UART MIDI (and a Waveblaster header)
+trouble-free PnP initialization, supported by UNISOUND
+no drivers/TSRs needed
+SBPro2 and WSS support
-no SB16
That pairs perfectly with a late SB16 (like the AWE64) with buggy MIDI, CQM FM but of course SB16 support (er, and the Ultrasound that is amazing at native Ultrasound stuff and pretty awful at everything the Rocky can do).
Also, it's pretty common and looked down upon as "OEM stuff" so even on well-known auction sites it's pretty affordable.
I'd definitely recommend getting a Rocky 2.5 for that machine. It's not only completely authentic, it's also a pretty good sound card. If you really want SB16, I'd suggest getting an SB16 as well and install both 😉