Vintage OPTi 82C931 ISA sound card features the 1817SL/BSL REV-A PCB design, ideal for retro computing enthusiasts building DOS or early Windows gaming rigs. This 16-bit ISA bus card includes a Wave Table header for MIDI expansion and integrated UTC TEA2025 amplifier circuitry. The rear bracket provides standard audio connectivity with Mic, Line In, and Speaker Out jacks, alongside a dedicated game/MIDI port for legacy controllers.

Brand: OPTi
Chipset: 82C931
Interface: 16-bit ISA
Model: 1817SL/BSL REV-A
Ports: Mic, Line In, Speaker Out, Game/MIDI
Audio Controller: OPTi 111713
Amplifier: UTC TEA2025
Features: Wave Table Header
PCB Color: Green
Manufacturing: Made in China
Form Factor: Full Height ISA
Compatibility: Retro PC / DOS / Windows 9x
Revision: REV-A
Serial: 1547000040

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