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.

Desktop Motherboard Circuit Board

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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: August 10, 2026

Punched or Bent Hard Drives: With Board vs. Without Board

Learn why hard drives are punched or bent, how to identify models with or without a controller board, and how to prepare them for a buying evaluation.

Hard Disk Drive(HDD) Non-SATA Board Hard Disk Drive Hard Disk Drive(HDD) SATA Board

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Last Updated: August 8, 2026

What Is a BGA Chip? A Complete Guide to Ball Grid Array Packaging

A BGA chip is an integrated circuit package that uses a grid of solder balls underneath to connect directly to a circuit board. BGA packaging allows many electrical connections to fit within a compact area and is commonly used for processors, graphics chips, memory, chipsets, and controllers. Learn how BGA differs from PGA, LGA, and leaded IC packages and where each design may be preferred.

Computer PC Parts CPU

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Last Updated: August 7, 2026

Metal vs. Plastic Gold Connectors: Identification and Sorting Guide

Learn how to identify, separate, and prepare metal cable connectors and plastic gold connectors for clearer e-scrap inspection, grading, and recycling.

Computer Featured PC Parts

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Last Updated: August 6, 2026

Ohata RAM Scrap Classification Guide | RAM Recycling Grades, Server ECC RAM & Gold Finger Memory

Learn how to identify RAM-S, RAM-A, RAM-B, RAM-C, and RAM-D using the Ohata RAM Scrap Classification System. Includes engineering criteria, identification methods, technical references, and recycling guidance.

PC Memory(RAM)

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Last Updated: August 4, 2026

Gold Fingers and Gold-Plated Contact Identification Guide

Gold fingers are narrow, gold-plated contacts found along the edges of memory modules, graphics cards, and other circuit boards. This guide explains how to identify them and how hard gold differs from other gold-colored PCB finishes. Learn what alignment notches, beveled edges, shorter contacts, and insertion marks can reveal about their design and condition.

Computer CPU PC Memory(RAM) 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

SS Grade Circuit Board Scrap | Telecom & Cell Phone Guide

Identify SS Grade circuit board scrap from telecom, enterprise networks, server backplanes and older cell phones using IC density and connector clues

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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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