Scrap Wiki

Last Updated: August 19, 2026

How to Read Motherboard and PCB Markings: What the Letters & Numbers Mean

Learn how to read motherboard and PCB markings, including part numbers, revisions, date codes, reference designators, polarity marks, and recycling clues.

Circuit Board Desktop Motherboard

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Last Updated: August 11, 2026

Toshiba Satellite Laptop Motherboard Scrap: A Grade Guide | Ohata

Identify Toshiba Satellite laptop motherboard scrap by model family, board code, revision, BGA layout,connectors, and condition. Review Ohata A Grade sorting and downgrade rules.

Circuit Board Desktop Motherboard

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Last Updated: July 28, 2026

Circuit Board Scrap Classification Guide | Ohata PCB Grades

Compare Ohata's nine PCB scrap grades, from SS to Appliance B. Learn how socket type, IC density, gold contacts, and board condition affect classification.

Circuit Board

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Last Updated: July 28, 2026

S Grade Circuit Board Scrap: Identification Guide | Ohata

Identify S Grade circuit board scrap by high IC density, ceramic packages and premium connectors. Compare S Grade with SS and A+ before sorting or selling.

Circuit Board

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Last Updated: July 28, 2026

A+ Grade Circuit Board Scrap: Industrial & Apple PCB Guide

Identify A+ Grade board scrap from Apple logic boards, SATA HDD controllers, PLCs, CNC systems and selected servers. Compare A+ with S, SS and A Grade.

Circuit Board

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Last Updated: July 28, 2026

A Grade Circuit Board Scrap: Laptop & Server Board Guid

Identify A Grade scrap from non-Apple laptop boards, selected plastic-socket servers, gold-finger cards, optical-drivecontrollers and backplanes.

Circuit Board

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Last Updated: July 28, 2026

B Grade Circuit Board Scrap: Server & Desktop Board Guide

Identify B Grade scrap from two-socket plastic PGA server boards, selected desktop socket groups, lower-tier telecom boardsand peripheral interface cards.

Circuit Board

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Last Updated: July 28, 2026

C Grade Circuit Board Scrap: Desktop & Expansion Card Guide

Identify C Grade scrap from single-socket plastic PGA servers, desktop socket groups 2, 4, 6, 7 or 9, trimmed cards andconsumer graphics boards.

Circuit Board

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Last Updated: July 28, 2026

D Grade Board Scrap: Metal-Socket Desktop & Console Guide

Identify D Grade scrap from metal-socket desktop motherboards, verified console boards, low-density cards and graphicsboards with large cooling hardware.

Circuit Board

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Last Updated: July 28, 2026

Appliance A Grade Board Scrap: Identification Guide | Ohata

Identify Appliance A Grade board scrap from HVAC units, washers, printers and vending machines.Compare A vs B grades, components, condition and sorting rules.

Circuit Board

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Last Updated: July 28, 2026

Appliance B Grade Board Scrap Identification Guide | Ohata

Identify Appliance B Grade board scrap by low IC density, simple control circuits, open PCB areasand basic power components. Compare B vs A before sorting.

Circuit Board

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