Lenovo / ThinkPad / P Series

ThinkPad P51

ThinkPad P51 platform specifications based on Lenovo PSREF.

Scope: Product generation / platformPSREF verified
Machine Type: 20HH / 20HJ / 20MM / 20MN
Model / MTM: 184Official Models verifiedDirect specifications: Not collected

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Buying and service essentials

Verified in official sources

Check before buying

Model / MTM: Not collected184 Models entries verified
CPU / GPU: 6th or 7th Generation Intel Core i7 / Intel Xeon E3 v5 or v66 CPU options / Intel HD Graphics 530 / Intel HD Graphics 630 / Intel HD Graphics P530 / Intel HD Graphics P630 / Platform options / dGPU: 2 options (configuration-dependent)
Display: 15.6-inch / 1920x1080 / 3840x21603 platform options / Non-touch / Multi-touch
WWAN: Configuration-dependentRetrofit conditions apply

Upgrades and repair

Memory: DDR4-2400 / SocketedSO-DIMM: 4 / maximum 64 GB
Storage: 2.5-inch 7mm SATA HDD / M.2 2280 PCIe NVMe SSD, single-sidedSATA 6Gb/s / PCIe NVMe 3.0 x4 / Maximum simultaneous devices 3 device(s)
Power: Slim tipAC adapter: 170 W
Parts / service: Model-listed partsHMM verified / Key procedures verified

Motherboard and slot topology

Shows the strength of the supporting evidence. It is not a performance score or recommendation. Full sources appear in the Evidence section below.

Memory implementation: DDR4-2400 / Socketed / SO-DIMM: 4
Storage form factor: 2.5-inch 7mm SATA HDD / M.2 2280 PCIe NVMe SSD, single-sided
Maximum simultaneous devices: 3 device(s)

Hardware Maintenance ManualOpen external site in a new tab

Specifications

CPU

CPU options for this platform / Intel6th or 7th Generation Intel Core i7 / Intel Xeon E3 v5 or v6

CPU	Integrated GPU	Cores / threads	Base frequency	Max frequency
Intel Core i7-6820HQOpen external site in a new tab	Intel HD Graphics 530	4 / 8	2.70 GHz	3.60 GHz
Intel Xeon E3-1505M v5Open external site in a new tab	Intel HD Graphics P530	4 / 8	2.80 GHz	3.70 GHz
Intel Core i7-7700HQOpen external site in a new tab	Intel HD Graphics 630	4 / 8	2.80 GHz	3.80 GHz
Intel Core i7-7820HQOpen external site in a new tab	Intel HD Graphics 630	4 / 8	2.90 GHz	3.90 GHz
Intel Xeon E3-1505M v6Open external site in a new tab	Intel HD Graphics P630	4 / 8	3.00 GHz	4.00 GHz
Intel Xeon E3-1535M v6Open external site in a new tab	Intel HD Graphics P630	4 / 8	3.10 GHz	4.20 GHz

Graphics / GPU

dGPU options

GPU	Dedicated memory	Selection conditions
NVIDIANVIDIA Quadro M1200	4 GB	Configuration-dependent
NVIDIANVIDIA Quadro M2200	4 GB	Configuration-dependent

These are platform configuration options, not the GPU installed in an individual MTM.

Memory

Type: DDR4-2400
Maximum capacity: 64 GB
Physical slots: 4
Implementation: DDR4-2400 / Socketed
Upgrade / replacement: Not recorded
Configuration constraints: Four DDR4 SO-DIMM sockets; dual-channel capable
ECC or non-ECC memory; ECC is supported only with a Xeon processor
System clocks down for processors with a lower-speed memory controller

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Check the board layout in the HMMOpen external site in a new tab

Storage

Interface and form factor: SATA 6Gb/s / PCIe NVMe 3.0 x4
Supported form factors: 2.5-inch 7mm SATA HDD
M.2 2280 PCIe NVMe SSD, single-sided
Physical slots: Not recorded
Maximum simultaneous devices: 3 device(s)
Upgrade / replacement: Not recorded
Configuration constraints / exclusions: The PSREF explicitly documents up to three drives as two M.2 SSDs and one HDD.
RAID 0 and RAID 1 are platform options.

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Search Japan marketplaces for 2.5-inch 7mm SATA SSDAmazon Japan Rakuten Ichiba (Japan)Yahoo! Shopping (Japan)Mercari (Japan)Yahoo! Auctions (Japan)External sitesPR

Check the SSD replacement procedure in the HMMOpen external site in a new tab

Display

Size: 15.6-inch
Platform configuration options: configuration Resolution Touch Panel / brightness Surface / features
FHD WVA
15.6-inch 1920x1080 Non-touch WVA / 250 nits anti-glare
UHD WVA
15.6-inch 3840x2160 Non-touch WVA / 300 nits anti-glare
FHD WVA touch
15.6-inch 1920x1080 Multi-touch WVA / 220 nits 10-point touch

configuration	Resolution	Touch	Panel / brightness	Surface / features
FHD WVA 15.6-inch	1920x1080	Non-touch	WVA / 250 nits	anti-glare
UHD WVA 15.6-inch	3840x2160	Non-touch	WVA / 300 nits	anti-glare
FHD WVA touch 15.6-inch	1920x1080	Multi-touch	WVA / 220 nits	10-point touch

Battery architecture

Architecture: Removable

Configuration options: Li-Polymer / 4-cell / 66 Wh
Li-Polymer / 6-cell / 90 Wh

Each row is a platform configuration option. Simultaneous installation is not inferred.

Power and AC adapter

Connector: Slim tip
Wattage: 170 W

Wireless and WWAN

WLAN options: Intel Dual Band Wireless-AC 8260, 802.11ac 2x2
Intel Dual Band Wireless-AC 8265, 802.11ac 2x2
WWAN: Configuration-dependent
Retrofit / conditions: Retrofit conditions apply
WWAN options: Wireless WAN upgradable
Sierra Wireless EM7455 4G LTE-Advanced

Ports and docking

Ports: 4x USB 3.1 Gen 1, one Always On
USB-C / Thunderbolt 3
Mini DisplayPort 1.2a
HDMI 1.4b
Ethernet RJ-45
ExpressCard/34 slot
Docking support: Physical connector: Dock connector

Dimensions and weight

Non-touch models: 377.4 × 252.3 × 24.5–29.4 mm
Touch models: 377.4 × 252.3 × 25.8–30.7 mm
Non-touch, 4-cell battery: 2.55 kg / By configuration
Non-touch, 6-cell battery: 2.67 kg / By configuration
Multi-touch, 4-cell battery: 2.82 kg / By configuration
Multi-touch, 6-cell battery: 2.9 kg / By configuration

Official maintenance documentation and key procedures

ThinkPad P51 Hardware Maintenance ManualOpen external site in a new tabSecond Edition · 2017-06Scope: ThinkPad P51 Machine Types 20HH and 20HJ

Key procedures

Battery: p.71
Base cover: p.72
SSD / storage: p.72
Memory: p.77
Keyboard: p.78
Display assembly: p.90

Part number information

Part numbers and their relationships to this product or model are shown when verified in official Lenovo sources.

Official Model-listed parts

Lenovo listing verified

These 35 parts are listed directly for Model 20HH0004US in Lenovo Parts Lookup.

Model / MTM: 20HH0004US
Model-listed parts: 35
Parts with direct specs: 5
Official source: Lenovo Parts Lookup

Component	P/N	Lenovo-provided name	Direct Lenovo specifications	Substitute references
AC アダプター (AD)	`45N0372`	Lenovo AC_ADAPTER 長方形 170W 2P ブラック	Plug Rectangle Capacity 170W Pin 2 Safety WW Color Black	4 (not expanded)
アンテナ (AN)	`00UR818`	WLAN WWAN Antenna kit	Not confirmed	—
外付けバッテリー (BA)	`00NY492`	拡張、6C、90Wh、リチウムイオン、LGC	Not confirmed	1 (not expanded)
ベゼル/サービスドア (BZ)	`00UR804`	Base big door cover,plastic,Black	Not confirmed	—
Aカバーアセンブリー、LCD カバーアセンブリー (CA)	`01HY700`	LCD背面カバーASM	Not confirmed	—
CMOSバッテリー (CB)	`02K7078`	RTC,1C,3V,LION,CR2032	Not confirmed	11 (not expanded)
ケーブル、外部ケーブル、電源コード、USBケーブル、CRU可能内部ケーブル (CC)	`42T5008`	Lenovo 電源コード、US/CA、1M、2P	Not confirmed	12 (not expanded)
内蔵カード (CI)	`00NY649`	FRU LCD LED Board,P50	Not confirmed	—
WLAN (CL)	`01AX704`	Wireless,CMB,IN,8265 NV M2	Not confirmed	—
カメラ (CM)	`00HN375`	カメラ、720P、前面、MIC、WTB、Chny	Not confirmed	3 (not expanded)
カバー (CO)	`01HY706`	シャーシ・アセンブリー、Mgフレーム	Not confirmed	—
カバー (CO)	`01HY709`	COVER, Base Cover ASM,metal,Black	Not confirmed	—
内蔵ケーブル (CT)	`00UR826`	Cable,EDP,FHD	Not confirmed	—
内蔵ケーブル (CT)	`00UR831`	Cable,Touchpad	Not confirmed	—
内蔵ケーブル (CT)	`00UR832`	Cable,FPR,FPC	Not confirmed	—
内蔵ケーブル (CT)	`01HY710`	Cable,LED Camera,ICT	Not confirmed	1 (not expanded)
ファン/ 冷却アセンブリ (FA)	`00NY520`	WT1 用ファン + ヒートシンク	Not confirmed	2 (not expanded)
内蔵キーボード (KI)	`01HW200`	内蔵キーボード、英語、バックライト	Not confirmed	1 (not expanded)
スクリューキット/ラベルキット/その他 (KS)	`00NY399`	その他のラバー	Not confirmed	—
スクリューキット/ラベルキット/その他 (KS)	`01HY715`	ラベル・キット	Not confirmed	—
LCD部品 (LA)	`00UR822`	ヒンジ・キャップASM	Not confirmed	—
LCD部品 (LA)	`01HY703`	LCD Bezel,w/camera	Not confirmed	—
LCDパネル (LP)	`00NY443`	AUO 15.6 FHD IPS AGのFRU	Size (Inch) 15.6 Resolution FHD Screen Type (Glare or Anti-Glare) Anti-Glare Touch Non-Touch Panel Type IPS Brightness (nit) 250	27 (not expanded)
M.2カード (M2)	`00UP440`	Lenovo SSD_ASM 512G,M.2,2280,PCIe3x4,Samsung,OPAL	Capacity (GB) 512 Form Factor M.2 2280 Interface PCIE3X4 Security OPAL	144 (not expanded)
メカニカルアセンブリ (MA)	`00UR803`	ブラケット、RAM、金属製	Not confirmed	—
メカニカルアセンブリ (MA)	`00UR819`	ヒンジASM,FHD	Not confirmed	—
メカニカルアセンブリ (MA)	`00UR868`	MECH_ASM Tray,SSD,w/screw,NVMe	Not confirmed	—
メカニカルアセンブリ (MA)	`01HY707`	MECH_ASM Upper Case,w/FPR,w/o CS	Not confirmed	—
メモリー (MM)	`01AG710`	Lenovo MEMORY,8G,DDR4,2400,SODIMM,SAMSUNG	Capacity (GB) 8 Speed DDR4 2400 Interface SODIMM	123 (not expanded)
内蔵部品その他 (MN)	`00UR837`	Dummy Express card,Plastic	Not confirmed	—
内蔵部品その他 (MN)	`01HY714`	その他のキット	Not confirmed	—
外部部品その他 (MX)	`00UR898`	ダミーSCR、ブラック、プラスチック	Not confirmed	—
システムボード (PL)	`01AV359`	Lenovo BDPLANAR WIN,i7-7700,M1,4G,Y-TPM,RA	DPK WIN CPU intelI77700HQ GPU Type DIS GPU Name NVIDIA Quadro M1200M AMT N-AMT	5 (not expanded)
RDVD/ RUSB (RC)	`5R30W06213`	Win10PROx64 Modular US	Not confirmed	—
内蔵スピーカー (SI)	`00UR807`	Speaker ASM,left right	Not confirmed	—

This table contains parts listed directly for the displayed Model / MTM. It is not a product-wide compatibility list. Substitute identifiers are retained as counts and are not promoted to published parts in this breadth layer.

Model-listed parts: View parts listed for a Model

Model / MTM

184

Codes listed in Lenovo Models identify a relationship to this product. They do not establish exact CPU, memory, storage or other configuration details.

Model / MTM codes verified in official sources: 184
Exact configuration data: Not collected

Enter a code to search the official Lenovo Models data for this product.

Exact Model / MTM configuration data is not recorded. Specifications on this page are platform-level options.

Evidence

5 sources. Of 12 product claims, 12 are verified with high confidence.Display, battery and keyboard parts relationships each show their state as verified in official sources. Procedure coverage in official maintenance documentation is audited per product for major components.