FOR C596MAIN-B Mainboard (Parallel Port) — Compatible with GP-M820 / M820

Replacement mainboard C596 (model C596MAIN-B) designed for use with GP-M820 and M820 devices. This motherboard includes a parallel port and is intended as a direct swap for the factory board in the listed models. Compatible models: GP-M820, M820. Model numbers: C596, C596MAIN-B.