Input peripherals (keyboard, joystick, mouse etc.)

1. Scope and Applicability

This PCR covers separately supplied computer keyboards, mice and joysticks that convert human actions into computer input. It defines a production foreground package for dry final assembly, functional testing and packing from purchased finished components. The declared unit is a mass-normalized production unit, not equal input service across devices. Integrated laptop keyboards, scanners, displays, computers, software and repair services are excluded. The semantic need is configuration-specific electronics assembly with component-boundary reconciliation and model-specific acceptance testing; shared material rules alone do not establish a complete peripheral dataset. Sources: un-cpc-3-0-structure-2025, logitech-product-lifecycle-approach.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.office-accounting-and-computing-machinery.input-peripherals-keyboard-joystick-mouse-etc
classification_refs	CPC 3.0: 45261
covered_products	Separately supplied keyboards; mice; computer joysticks
excluded_products	Integrated computer assemblies; scanners; displays; software; repair services
representative_product	One finished wired keyboard model; mouse and joystick datasets use their own configuration and acceptance evidence
production_route	Purchased finished components → dry assembly → functional test → packing
market_state	New, tested, ready for shipment; model and supplied accessories declared

3. Reference Flow

Field	Value
What	Produce a specified human-input peripheral meeting its acceptance specification
How much	1 kg net accepted finished devices of one model; report corresponding item count
How well	Pass declared key actuation, pointer tracking or axis response tests as applicable; declare interface compatibility
How long or cycle	One manufacturing delivery cycle; no default service life. Downstream comparison requires declared lifetime and use intensity
reference_flow_link	reference_product

Field	Value
Reference amount	1
Reference product flow	Input peripherals (keyboard, joystick, mouse etc.) fc64e9b7-ebef-47f8-a44c-25b47d5a3a32
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	Model and device function; wired/wireless interface; keyboard mechanism or sensor/axis technology; acceptance tests; net device mass and item count; supplied battery chemistry/capacity; included cable/receiver; bill-of-material revision; assembly site/year; upstream component boundaries; packaging mass separately

Declare every required qualifier in dataset metadata or linked product records. A missing qualifier makes the reference definition incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
net_mass	reference_product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Normalize by accepted output net mass, excluding shipping packaging. Retain measured kg/item for conversion; do not use a category-average device mass.
energy_conversion	electricity	Net calorific value	MJ	Convert metered kWh to MJ using 3.6 MJ/kWh. Preserve grid, voltage and loss boundary.
component_boundary	assembly	Mass	kg	Weigh complete purchased subassemblies; disclose included parts so sensors, switches, connectors and battery electronics are not counted twice.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Finished purchased components received at assembly gate
starting_condition_role	foreground_start
product_classification_scope	CPC 3.0: 45261
recursive_input_rule	A purchased finished peripheral is a separately recorded upstream input for a declared rework route, never a zero-burden recursive copy of this output. Rework requires a separately extended process map.
upstream_dataset_requirement	Link manufacturing datasets for each purchased component and inbound transport leg; record boundary, geography, technology, period and treatment links for wastes.
disclosure	Report gate-to-gate assembly separately from the linked cradle-to-gate result. This production module is not a complete final-product footprint.

rule_id	applies_to	Rule	source_ids
boundary_production	assembly	Include component receipt, assembly, functional test, packing, rework electricity and manufacturing rejects. Supplier moulding, board fabrication and soldering stay in linked component datasets when already included.	logitech-product-lifecycle-approach
boundary_extension	dataset	Add product distribution, use/recharging, replacement batteries and end-of-life in separately declared downstream scenarios before a full life-cycle claim. Do not report this assembly module as such a claim.	logitech-carbon-impact-methodology
boundary_completeness	assembly	Reconcile every BOM item and every site exchange to an atomic inventory row or a documented upstream inclusion. The listed conditional rows are a starting inventory, not permission to omit keycaps, feet, receivers or non-ABS housings. Add actual part-specific exchanges before dataset acceptance. Wet cleaning, soldering or moulding on site requires an expanded process map with each chemical, utility, waste and emission separately recorded.	logitech-product-lifecycle-approach

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
assembly	Final assembly, test and packing	required	All models within the declared dry-assembly route	foreground_production	1 kg net accepted devices

Process: Final assembly, test and packing (assembly)

Inputs

Product flows

ABS injection-moulded peripheral housing (housing)

inclusion_condition: When this ABS housing is fitted; identify one part number and resin grade.

• Selected flow: ABS injection-moulded peripheral housing
• Flow property / unit: Mass / kg
• Amount rule: Net issued housing mass, including rejected housings.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Populated printed circuit board (pcb)

inclusion_condition: When a purchased populated board is fitted; specify controller, sensor and radio content already included.

• Selected flow: Populated printed circuit board
• Flow property / unit: Mass / kg
• Amount rule: Net issued populated-board mass; do not add its mounted components again.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Keyboard key switch subassembly (switch)

inclusion_condition: Mechanical keyboard route, when separately purchased.

• Selected flow: Keyboard key-switch subassembly 941833e4-0249-45b4-abc8-1c0a6482f419
• Flow property / unit: Mass / kg
• Amount rule: Net issued switch subassembly mass from count and measured part mass.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Keyboard silicone rubber membrane (membrane)

inclusion_condition: Membrane keyboard route, when separately purchased.

• Selected flow: Keyboard silicone rubber membrane
• Flow property / unit: Mass / kg
• Amount rule: Net issued membrane mass.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Joystick axis mechanism (axis)

inclusion_condition: Joystick route; supplied as one identified electromechanical axis subassembly.

• Selected flow: Joystick axis mechanism
• Flow property / unit: Mass / kg
• Amount rule: Net issued axis mechanism mass; declare included potentiometer or magnetic sensor.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Optical mouse sensor module (sensor)

inclusion_condition: Optical mouse route only when sensor module is not included in the populated board.

• Selected flow: Optical mouse sensor module
• Flow property / unit: Mass / kg
• Amount rule: Net issued module mass.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

USB cable (cable)

inclusion_condition: Wired peripheral or included charging cable.

• Selected flow: USB cable
• Flow property / unit: Mass / kg
• Amount rule: Net issued cable mass; include connectors in the cable assembly boundary.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Lithium-ion battery (battery)

inclusion_condition: Rechargeable model with a supplied lithium-ion battery.

• Selected flow: 3C Lithium Battery 000abc1e-59e3-4336-bfd6-66575a4b0bda
• Flow property / unit: Mass / kg
• Amount rule: Net issued battery mass with chemistry, capacity and pack boundary.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

AA alkaline manganese dioxide battery (alkaline)

inclusion_condition: Model supplied with AA alkaline batteries.

• Selected flow: Alkaline battery b8cd9a54-b808-450f-8aa6-3ea2a037c416
• Flow property / unit: Number of items / Item(s)
• Amount rule: Net issued cell count per accepted output kg; retain measured cell mass for BOM reconciliation. Replacements during use are outside this production package.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Steel screw (screw)

inclusion_condition: When screw fastening is used.

• Selected flow: Steel screw 895204f6-6425-4814-afc5-cb97e530e892
• Flow property / unit: Mass / kg
• Amount rule: Net issued screw mass; record steel grade and coating.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Electricity (electricity)

inclusion_condition: All assembly, test and packing operations supplied with electricity.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: Metered line electricity plus justified share of supporting electricity, divided by accepted output mass.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Corrugated cardboard box (carton)

inclusion_condition: When a corrugated carton is used for shipment.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: Net issued carton mass including packing losses; exclude it from product net mass.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Outputs

Product flows

Input peripherals (keyboard, joystick, mouse etc.) (reference_product)

inclusion_condition: One declared peripheral model per dataset; one physical finished product exchange, never a mix of device functions.

• Selected flow: Input peripherals (keyboard, joystick, mouse etc.) fc64e9b7-ebef-47f8-a44c-25b47d5a3a32
• Flow property / unit: Mass / kg
• Amount rule: 1 kg accepted net finished-device output; supplied battery and integral cable included, retail carton excluded.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

Waste flows

Waste populated printed circuit board (reject)

inclusion_condition: When failed boards are removed and sent off site.

• Selected flow: Waste populated printed wiring board eb5ffe4a-49af-450c-9a31-3efdfd343f8a
• Flow property / unit: Mass / kg
• Amount rule: Weighed board waste sent to the identified treatment operator.
• Value mode: calculated_value
• Specificity: product_specific
• Normalization basis: per 1 kg net accepted finished devices of the declared model
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_assembly
• Sources:

7. Allocation and Co-product Handling

rule_id	applies_to	Rule	source_ids
allocation_shared	assembly	Separate model-specific operations by submetering or engineering records. For remaining common loads, use a demonstrated physical driver such as measured test-station time; use economic allocation only when physical relationships cannot be justified, with sensitivity and rationale disclosed.	ghg-protocol-product-standard-2011
allocation_recycling	assembly	Use a disclosed recycled-content convention for linked material datasets and manufacturing scrap. Keep treatment and recovery burdens explicit; do not automatically subtract hypothetical virgin-material credits from assembly electricity or component quantities.	ghg-protocol-product-standard-2011

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_assembly	assembly	Components, electricity, accepted output and board waste	BOM; stock ledger; meter; test log; waste transfer	model; part_id; issued/returned counts; kg/item; opening/closing stocks; meter readings; test time; accepted count/net mass; rejected count; waste kg; supplier boundary	Weigh representative parts with calibrated balance; reconcile material ledger, accepted-device tests and waste tickets; submeter electricity	kg; item; kWh; station-hour	Each production lot; meter at shift boundaries	Declare consecutive production period covering normal load, changeovers and rejects; justify representativeness	Named assembly site and declared model revision	Sum net consumption and attributable energy over same period; divide by accepted net output kg	Calibration; invoices; BOM revision; acceptance tests; meter logs; supplier declarations; waste tickets

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize	assembly	q_i = net consumed quantity_i / accepted net device mass. Reconcile net consumption using issues, returns and stock changes; do not subtract the same return twice. For the reference output q = M/M = 1.	cp_assembly records; accepted mass M > 0	kg/kg, Item(s)/kg or MJ/kg
electricity_basis	electricity	q_E = (meter kWh assigned to model × 3.6) / M; allocation shares must sum to unity over all products served.	Meter differences; physical allocation driver; M	MJ/kg

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
quality_coverage	assembly	Document technological, temporal and geographic representativeness, completeness and reliability. Retain primary measurement evidence for owned assembly operations.	ghg-protocol-product-standard-2011; cp_assembly
quality_bom	assembly	Reconcile full device mass and packaging separately to the BOM; identify missing exchanges and upstream overlaps before acceptance. Missing data are not zero.	cp_assembly
quality_ranges	assembly	Collect actual amounts. No external numerical range is prescribed; do not transfer a single model carbon footprint into component or energy ranges.	cp_assembly

9. Validation Rules

rule_id	applies_to	Rule	source_ids
validate_identity	reference_product	Require one model, all reference qualifiers, accepted mass greater than zero and declared kg/item conversion. Reject cross-device comparisons based only on mass.
validate_inventory	assembly	Every applicable exchange must be one physical flow with a resolved or explicitly unresolved identity. Demonstrate absence for conditional rows not used. Require complete BOM and stock/output/waste reconciliation; investigate discrepancies against documented instrument uncertainty rather than an invented tolerance.
validate_boundary	dataset	Require upstream links, no component double counting and separate disclosure of gate-to-gate scope. A complete product footprint additionally requires downstream transport, use and end-of-life scenarios.	logitech-carbon-impact-methodology

10. Published Dataset Profile

Field	Value
dataset_role	secondary_dataset; background_dataset
downstream_use	Assembly module for a declared peripheral model; link upstream manufacture and downstream lifecycle scenarios
allowed_use	Production data package and process/lifecyclemodel projections with matching model and boundary
excluded_use	Unqualified full-life-cycle claims; direct ranking of keyboards against mice or joysticks; substitution for semiconductor or polymer manufacture
required_metadata	Model; BOM version; site; year; technology; output basis; component dataset links; grid; allocation; conditional-route decisions
required_quality_disclosure	Measurement provenance; completeness; representativeness; unresolved identities; omitted operations; uncertainty and absence of external ranges
update_trigger	Model/BOM, battery, supplier, site, test programme, energy mix or waste route change

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	official_guidance	UN Statistics Division, CPC Version 3.0 structure, 30 June 2025; https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv; retrieved 2026-09-08	Classification identity, row 45261; no quantitative evidence.
logitech-carbon-impact-methodology	literature	Logitech, Carbon Impact & LCA Methodology; https://www.logitech.com/en-us/sustainability/carbon-impact-methodology; retrieved 2026-09-08	Sourcing and manufacturing; separate transport, use, battery and end-of-life scenarios. No numerical benchmark transferred.
logitech-product-lifecycle-approach	literature	Logitech, Product Lifecycle Approach; https://www.logitech.com/en-ae/sustainability/environment.html; retrieved 2026-09-08	Assembly/testing boundary and upstream component manufacture; recycled content and supplier specifications.
ghg-protocol-product-standard-2011	standard	WRI/WBCSD, Product Life Cycle Accounting and Reporting Standard (2011), chapters 7–9 and 13; https://ghgprotocol.org/sites/default/files/ghgp/standards/Product-Life-Cycle-Accounting-Reporting-Standard_041613.pdf; retrieved 2026-09-08	Boundary disclosure, activity data quality, allocation hierarchy and reporting. Carbon-accounting source, not a claim of full LCA conformance.