OEM USB sub board / I/O board assembly for NP530XBB. Third-party retailer listing only (samsungparts.com, not Samsung documentation); not bench-tested.
Source: third-party retailer listing (samsungparts.com), not Samsung
Source notes
samsungparts.com third-party retailer listing (not Samsung) "Supported Models" lists: NP530XBB, NP530XBBK05US, NP530XBBK01US, NP530XBBK04US, NP530XBBK08US, NP530XBBK03US, NP530XBBK07US, NP530XBBK06US. Samsung description: "Assembly Bd Sub-Top;Glide-13 G". Read 2026-10-30 (via R3B-AG-001).