This part is from a PA4 keyboard and used in modelsRD-600, FP-9, FP-1, HP-145, HP-147, HP-147D,HP-236, HP-237, HP-237D, HP-237E, HP-245, HP-2800,HP-2800G, HP-2880, HP-330, HP-330E, HP-335, HP-3800, HP-3800G, HP-530, HP-530E,HP-535, HP-550G, HP-555G, HP-730, KR-1070, KR-370, KR-375, KR4300, KR-570, KR-570W, KR-575, KR-575P, KR-770, MP-500-BW,PT-2700, RD-500, FP-8, HP-5700, HP-7700.
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